Student Uses AI and a 3D Printer To Do Their Homework Assignment for Them

3D Printer Writing Someone's Homework

Photo: Screenshot from TikTok

Artificial intelligence has been everywhere lately. Though it's presenting interesting prospects in the tech world, it's also proving to potentially make things very challenging for educators. For work that’s turned in online, there’s always the potential that an AI chatbot could do an assignment for the student. Having the pupil turn in a handwritten copy is one way to guard against that, but a TikTok user found a way around it. They used ChatGPT to complete the given assignment and then programmed a 3D printer to record the answers that the AI wrote.

TikTok user 3d_printer_stuff shared a series of videos detailing how it all came together, including one tutorial that shows the same steps you’d need to take if you wanted technology to do your homework, too.

The student began by opening up ChatGPT and entering the task in the program. They then instructed the AI to write the assignment. Once it was done, they went to another site called 3DWriter and copied the text there. After finding the right font and spacing for the sheet, they then positioned lined paper on the 3D printer so that it would record the text onto the lines—just like a human would. The final step? “Enjoy the time saved,” 3d_printer_stuff said .

Though this may be seen as a clever shortcut, it’s important to recognize how harmful it is to one’s education. If the point of homework is for extra practice outside of the classroom, then using these round-about methods of automating assignments is only hurting your future self and the grasp of class concepts. Some school districts have already recognized the possibilities for cheating and have banned ChatGPT as a result. The New York City Department of Education has restricted access to it on school-owned networks and devices, stating concerns for the “potential to undermine student learning.”

A TikTok user employed ChatGPT to complete a homework assignment and then programmed a 3D printer to record the answers that the AI wrote.

@3d_printer_stuff #fyp #chatgbt #3dprint #timelapse ♬ In The End – Mellen Gi Remix – Tommee Profitt & Fleurie & Mellen Gi
@3d_printer_stuff #fyp #easy #chatgbt #timelapse #3dprint ♬ The Business – Tiësto

They share how they did it in the video below.

@3d_printer_stuff #MadeWithKeurigContest #chatgbt #timelapse #fyp #3dprint #tutorial #easy ♬ Calm LoFi song(882353) – S_R

h/t: [ PC Gamer ]

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DIY Homework Writing Machine

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Introduction: DIY Homework Writing Machine

akashv44

In this Instructable, I'll show you how to create a completely functional 3D-printed writing machine for your science fair project at school or college. This project was created as part of my second-year engineering project at Gujarat's Chandubhai S. Patel Institute of Technology (CSPIT). I also make this video for my YouTube channel "Creativity Buzz".

To design this writing instrument, I used Autodesk Fusion 360. There are many different kinds of writing robots, but in this lesson, I create a corexy writing machine. Making use of this will teach you everything there is to know about this writing robot.

All of the 3D printed parts are attached stages in the .stl file. You can download this and edit it in Autodesk Fusion 360 as necessary. 

Supplies

There are three types of products need to make this Writing Machine.

1) Electrical Materials

2) Hardware Materials

3) Software and Firmware

  • 3D Printer https://3dflyingbear.com/
  • Arduino Uno (1 pc) https://amzn.to/3GtBDFT
  • CNC Shield V3 Expansion board (1 pc) https://amzn.to/3GtBDFT
  • A4988 Stepper Motor Driver (2 pcs) https://amzn.to/3GtBDFT
  • Nema 17 Stepper Motor ( 2 pcs) https://amzn.to/3KjIoeN
  • SG90 Servo Motor (1 pc ) https://amzn.to/3ZU7arD
  • 12 Volt 2 A Adapter
  • 2 pin Short Jumper ( 6 pcs )
  • 8 mm Threaded Rod 42 cm long and Nut (2 pcs)
  • 8 mm Plain Steel Rod 35 cm long (2 pcs)
  • 8 mm Plain Steel Rod 27.5 cm long (2 pcs)
  • 6mm Plain Steel Rod 6.5 cm long (2 pcs)
  • 7mm Spring @ 20 Rs (1 pc)
  • LM8UU Slider bearing (8 pcs) https://amzn.to/3KnvtIP
  • LM6UU Slider bearing (2 pcs) https://amzn.to/40TpjHk
  • 623ZZ 10x4x3 mm bearing (10 pcs)
  • Stepper motor Pulley GT2 (2 pcs)
  • GT2 6mm Belt 2 meter https://amzn.to/3ZWBTEp
  • 3mm + Nut and Bolt ( 16mm , 40 mm length )

3) Software

  • Autodesk Fusion 360 ( We use this software to design 3d .stl parts to use in 3d printer to make plastic parts )https://www.autodesk.in/products/fusion-360/
  • Ultimate cura ( We use this software for slice .stl file to gcode for use in 3d printer ) https://ultimaker.com/software/ultimaker-cura/
  • Arduino IDE ( For Install corexy Firmware to Arduino Uno ) https://www.arduino.cc/en/software
  • Inkscape version 0.92 ( For make gcode file for writing or drawing or photo to use in universal gcode sender) https://inkscape.org/release/inkscape-0.92/?latest=1
  • Universal gcode sender ( Import gcode file which exported from Inkscape and give command to writing machine) https://winder.github.io/ugs_website/download/

Step 1: Make Plastic Parts

Make Plastic Parts

We design plastic parts in Autodesk Fusion 360 and export them as .stl files. All .stl files that are attached to steps that use them. Import the stl files into the ultimaker cura slicer software and adjust the settings for the walls and nozzles you require. 

Then, export the gcode file to a memory card and print it using PLA filament on a 3D printer. Make every 3D printed object step by step. To assemble this writing machine, we need 10 3D-printed components. The total weight is around 250 grammes.

Step 2: Make Y Axis Slider

Make Y Axis Slider

Take two 42 cm long 8 mm threaded rods, 8 mm nuts, and the stepper motor holder after all the 3D-printed parts have been completed printing. Then, as shown in the picture, passing this threaded road from the bottom holes in the stepper motor holder. Next, insert threaded rods from the opposite end of the second stepper motor holder.

Fix two nuts on the second end of the threaded rods after passing them through both stepper motor holders.

Attachments

download {{ file.name }}

Step 3: Added Stepper Motors

Added Stepper Motors

Next, take two stepper motors and insert them into the stepper motor holders' casing. Then tighten every screw on the holder joint and stepper motor.

Take two 8 mm plain steel rods that are 35 cm long and pass them through the stepper motor holder's top holes.

If you need to write on a huge scale, you can use long steel rods, although large highways reduce the quality of your writing.

Step 4: Middle Slider for the X- Axis and Y-axes

Middle Slider for the X- Axis and Y-axes

After creating the y axis, create the middle slider that connects the x and y axes.

Take two middle slider plastic 3d printed parts for this, one additional 3d printed part, LM8UU Slider bearing (8 pieces), 623ZZ 10x4x3 mm bearing (8 pieces), and 40mm x 3mm bolts and nuts.

Place one 3D-printed slider object four LM8UU Slider bearings, and Attaché the other 3D-printed slider object four LM8UU Slider bearings. Next, insert four 40mm long bolts into the holes shown in the illustration. From the other side, attach two 623ZZ bearings to these bolts. Then attach all bolts from the opposite side and attach the middle 3D-printed part to the other middle part. Then secure the middle slider with the final four 40mm bolts.

After creating the middle slider, take the Y axis and remove half of the plain rod, and run the middle slider through this. After that, reattach the plain rods to the stepper motor holder.

download {{ file.name }}

Step 5: Pen Holder

Pen Holder

The pen holder needs to be built once the Y-axis has been constructed.

Two 6.5 cm long 6mm plain steel rods, two LM6UU slider bearings, and a 7mm spring are the components you'll need to assemble a penholder using 3D printed materials. As shown in the picture, place two LM6UU bearings into the two holes in the grey 3D printed portion. Then, using two 6 mm plain rods, pass them through the wooden 3D-printed components of the pen holder as shown in the third picture. Place a 7 mm spring between the holder and bearing for the second rod while passing the first rod directly.

Use 16-mm bolts and nuts to attach the red pen stand to the grey 3D-printed portion.

download {{ file.name }}

Step 6: Make X Axis

Make X Axis

Two 27.5 cm long 8 mm plain steel rods, a pen holder, and a 3D printed belt end portion are required to make the X axis.

Attach two 8mm steel rods to the belt end 3D printed item as shown in the picture. After that, move the Y axis' middle slider over this structure. Fix the pen holder to the second end of the steel rod after that. Fix a permanent junction with two 16mm bolts.

download {{ file.name }}

Step 7: Pulley and Roller

Pulley and Roller

Then insert two 623ZZ bearings into the pen holder and fix them using a 40-mm bolt.

Get two GT2 stepper motor pulleys and attach each one individually to the stepper motor shaft.

Step 8: Run GT2 Belt

Run GT2 Belt

Take a 2-meter GT2 belt and attach one end to the wooden belt holder portion that was 3D printed.

Next, pass the second end of the GT2 belt through the 623ZZ bearing on the middle slider, the stepper motor GT2 pulley, the 623ZZ bearing on the pen holder, the GT2 pulley, and the 623ZZ bearing on the middle slider before attaching the second end to the belt holder 3D printed component as shown in the pictures.

Step 9: Make Controller Box

Make Controller Box

Arduino Uno, CNC Shield V3 Expansion board, two A4988 Stepper Motor Driver, and six short jumpers are required to create the controller box. 

Take a controller box that was 3D printed and mount an Arduino Uno on it. On the Arduino Uno, attach the CNC Shield V3 Expansion board as shown in the picture. Then, as shown in the diagram, take a short jumper and place it on the CNC shield. Place the final two A4988 drivers into the CNC mill as shown in the illustration.

download {{ file.name }}

Step 10: Servo Motor and Wiring

Servo Motor and Wiring

The final step in building a writing machine with hardware and electrical components is this.

From the back, insert the SG90 servo motor into the pen holder's cavity. After that, link the stepper motor wire to the two motors. Take the controller box and insert it through the bottom threaded rods of the Y-axis. Then connect the SG90 servo motor wire and the stepper motor wire to the controller box.

Step 11: Firmware Installation

Firmware Installation

  • Download the Corexy firmware using this link. 
  • https://github.com/jamescarruthers/PlotterXY

Download all of the software listed in this instructable's supply step.

Next, use a USB pin to connect an Arduino Uno to a computer. Next, launch the Arduino IDE software on your computer and choose the Arduino Uno board and Port.

Then use the file - open menu to open firmware in the Arduino IDE. then upload Arduino Uno with firmware.

Create a design in the Inkscape programme, then export it to the Universal Gcode Sender programme. then press "start" to begin writing on paper.

Step 12: Writing on Paper

Writing on Paper

Fix the pen in the pen holder upside down, 4 mm from the paper. Then press "Start" to write on paper.

You can write or draw any image on this writing machine.

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Did someone say free resources and PD? In our upcoming live webcast on February 1st at 5:00 PM ET, we'll dive deeper into the wealth of 3D printing resources available to educators. Join us as we explore free resources that have helped educators transform their classrooms around the world.

What we’ll cover:

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An introduction to 3D printing

This package of resources by Learnbylayers provides a comprehensive introduction to 3D printing, where it is used in the wider world and why it is used to manufacture certain products. Students design an object, slice and print it and learn about the basics of 3D printing. The materials can be taught in class or used as extended learning for homework or self-guided learning. 

Lesson resources include:

  • 6 editable lesson plans
  • 5 Lesson PowerPoint presentations to cover each lesson
  • 5 Lesson task activities with answer sheets
  • 4 Homework tasks
  • 4 Design challenge tasks
  • Video tutorials
  • 1 Final assessment PowerPoint with answer sheet and answers
  • Examples STL files to 3D print

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Please be aware that resources have been published on the website in the form that they were originally supplied. This means that procedures reflect general practice and standards applicable at the time resources were produced and cannot be assumed to be acceptable today. Website users are fully responsible for ensuring that any activity, including practical work, which they carry out is in accordance with current regulations related to health and safety and that an appropriate risk assessment has been carried out.

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Subject(s)Design and technology, CAD/CAM, Materials and manufacturing
Age11-14, 14-16
Published2010 to 2019
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Pen Plotter / Homework Writing Machine

How To Make DIY Pen Plotter / Homework Writing Machine at Home

This Drawing Robot/Pen Plotter/Drawing Machine is similar to the commercially available AxiDraw. It is powered by an Arduino Uno controller, uses a CNC Shield, and GRBL firmware.

The cost to build the Drawing Robot is between $75 and $100 depending on where you buy your parts and whether you already own some of the parts such as the Arduino.

Parts and Materials Required

  • 2 x Nema 17 Stepper Motors
  • 2 x Linear Rod M8 x 450mm for X Axis
  • 2 x Linear Rod M8 x 350mm for Y Axis
  • 2 x Linear Rod 3mm for Z Axis (you can get it from old CDROM)
  • 1 x Threaded Rod M8 x 480mm
  • 8 x LM8UU Bearings
  • 1 x Servo Sg90
  • 1 x Spring 5m (from ball point pen)
  • 2 x GT2 Pulley, 16 teeth
  • 5 x Bearing 624zz
  • 1 x 2000mm GT2 belt
  • 1 x Arduino Uno
  • 1 x CNC Shield
  • 2 x A4988 Stepper driver with heatsink
  • 6 x Jumpers
  • 1 x 12V 2A Power Supply
  • 4 x 5/16in-18
  • 13 x Phillips M3-0.5 x 16mm
  • 4 x Phillips M3-0.5 x 6mm
  • 5 x Phillips M4-0.7x 35mm
  • 1 x Hex M3-0.5 x 20mm
  • 4 x 5/16in washer
  • 4 x M3 washers

3D Printing

  • Download the files from Thingiverse
  • Open the 3D models in Cura or any other slicer(Sli3er, Simplify 3D, etc.)
  • Use 75% infill on all the parts (An infill of 70 – 100% will work as well)
  • Printed all the parts with 0.10 – 0.20 mm layer height
  • Printed with Hatchbox Red PLA
  • Use supports on the Penholder, Slider, X_Support_L and the X_Support_R

Note: The longest part took around 9hrs and the shortest took 30 minutes to print

3D Printed Parts

3d print homework

Cut your Linear Rods

Use a measuring tape and sharpie to mark the spots where the rods need to be cut

  • Use a vise to hold the rods in place when you cut them
  • Remember that you need (2) 350mm and (2) 450mm long linear rods
  • On the threaded rod, mark your cutting point at 470mm

3d print homework

Assemble the X-Axis (Linear/Threaded Rods)

Take the (2) 450mm linear rods and insert them into either x-support part

  • Use may need to use a round file to smooth out the holes that you insert them in
  • Also, you can use a rubber mallet to help insert the rods

Now take the threaded rod and insert it in the hole below. Feed a 5/16in washer and 5/16in nut on both sides of the x-support part

3d print homework

Assemble the X-Axis (Bearings)

Now you want to push the LM8UU bearings into their place on the top and bottom clamshell (The top and bottom clamshell take (4) bearings each)

Take (4) 624zz bearings and push them through the 3D-printed idler pulleys. Leave the 5th bearing for later when you assemble the Y-axis

3d print homework

Assemble the X-Axis (Carriage)

  • Get (4) M3-0.5 x 20mm screws, (4) M3 nuts, (4) M3 washers and (4) 624zz bearings with the idler pulleys installed
  • Take one screw and feed a washer through it, the washer will rest on the bearing. The nut will be at the bottom of the carriage, which will secure the bearing in place

3d print homework

Assemble the X-Axis (X-Support)

  • Slide the clamshell through the 450mm (X-axis) linear rods
  • Use a rubber mallet again to attach the last X-support on the linear rods
  • Make sure that the rods stick out equally on both sides
  • Slide the other end of the threaded rod through the hole on the X-support
  • Put on the last set of nuts and washers to hold the X-support in place
  • Now that the X-axis is complete, you can use (2) Phillips M3-0.5 x 16mm screws per X-support to help keep the linear rods from sliding

3d print homework

Assemble the X-Axis (Stepper Motors)

  • Use an appropriate sized allen wrench to attach the 16 teeth pulleys on the stepper motor shafts
  • Flipping the entire chassis around will make it easier to attach the stepper motors
  • Use (8) M3-0.5 x 6mm screws and a Phillips screwdriver to attach the (2) stepper motors

Assemble the Y-Axis (Clamshell)

(Optional if you have problems keeping belt on bearings)

  • Grab (4) M4-0.5 x 35mm screws and (4) M4 nuts
  • Make sure that you have the (4) idler pulleys ( Download from Thingiversa ) and the (4) washers printed
  • Insert the washers in between the two clamshells, with a screw in between
  • Screw the top and bottom clamshells together

3d print homework

Assemble the Y-Axis (Y- Back/Front)

  • Take the (2) 350mm linear rods and insert them the Y-back piece by using a rubber mallet
  • Get (1) M4-0.5 x 35 screw, (1) M4 nut and the 5th 624zz bearing
  • Get (2) M3-0.5 x 16 screws to secure the linear rods
  • Slide in the bearing when inserting the screw through the Y-back piece
  • Slide the the linear rods/Y-back piece through the LM8UU bearings and attach the Y-front piece using a rubber mallet

3d print homework

Assemble the X-Y Axis (Belt)

  • Use a pair of needle nose pliers to help guide the GT2 belt more easily through the clamshell
  • Take the two ends of the belt and slide them through the “teeth” on the Base Slider
  • The belt should be tight and not loose
  • Note that once the GT2 belt is on, it is normal for the clamshell not to move easily

Belt Diagram

3d print homework

Assemble the Z-Axis

  • Get (2) 3mm linear rods and the following 3D printed parts (Slider, Pen Holder, Base Slide, 3MM Metric Thumb Screw)
  • Get (1) Hex M3-0.5 x 20mm screw and the Metric Thumb Screw and push them together. Use superglue to keep it together.
  • Get (3) M3-0.5 x 16mm screws which you will use the secure the Base Slide to the Y-Front part. You may need to use (3) M3-0.5 nuts in order to hold it in place
  • Push the Slider and Pen Holder together to make one piece
  • Now take that new part and the (2) 3mm linear rods and slide the rods through the holes. Place a small spring in between the two parts so there is a little bit of pressure to lift the Slider. You may need to cut the spring a bit until there is an adequate amount of pressure on the slider.

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Step By Step Video

The Original Instructions by Henry Arnold Jonathan K

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12 thoughts on “ How To Make DIY Pen Plotter / Homework Writing Machine at Home ”

i constructed all the machine but when i press X+ the both X and Y axis are moving what is the problem

double check the steppers wiring

Have you solved it? I have the same problem with my machine, when I press X+, it’s necessary both motors move at same time, but, only one of them move…

Did you solve this problem?

Same problem how to solve ,?

Is it true that you didn’t use the microswitches in the final design?

Hello how to co figurę this machine to RUN on GRBL. What I mean is that GRBL interprets commands for x axis and y axis independently and if I look on your belt diagram it looks like both Motors have to run at the same time in order to move the carriage along y axis… How did you do that?

Have you solved it?

Thank you, thank you. It’s a very good built.

Is it possible to modify it to draw using brush ang oil based paint ?

Could you please tell what software/plug in and which version do you use to generate g-code for this machine?

Hello, what is the width of your belt? 6mm or 10mm? Thanks!

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This genius student uses the power of AI and a 3D printer to 'handwrite' their homework

A+ material.

3d printer with a pen on it writing on paper.

As technology advances, you can always count on one thing: students will use it to avoid doing homework. One industrious student not only got an AI chatbot to do their homework assignment, but they also rigged it to a 3D printer to write it out on pen and paper, expending the maximum amount of effort required to do the minimum amount of homework. Bravo!

TikTok user 3d_printer_stuff shared a series of videos on how they programmed a 3D printer to produce homework with the answers that ChatGPT wrote. 

They gave ChatGPT their assignment; it spit out an answer, and then they copy/pasted that text over to 3dwriter . As you can see, once you sort out the proper spacing and mount a pen onto your 3D printer, 3dwriter can write out the AI-generated text onto a sheet of paper perfectly between the margins. The tutorial video shows the process step-by-step. 

ChatGPT has been in the news recently after Microsoft said it would invest $10 billion in OpenAI . The company developed an AI chatbot that scrapes the internet to produce long-form answers to questions in a human-like fashion. This is exactly why ChatGPT has already been banned in New York City public schools over cheating and plagiarism concerns. Ultimately the fear is that students will use it as a crutch and hinder the development of critical thinking skills, which is why the NYC Dept. of Education restricted access to the AI chatbot on its schools' computers. I don't blame them, considering one of the videos shows math homework being done on the fly. 

@3d_printer_stuff ♬ Calm LoFi song(882353) - S_R

Of course, as many comments suggest, the next logical step in 3d_printer_stuff's scheme should be to train an AI to mimic their handwriting. That way, they could fool a teacher since the handwriting shown here is just a little too perfect. You could also use these tools for non-cheating purposes, I guess. I'd argue that setting up a rig to do your homework takes more time than just doing the homework yourself, but I applaud the hustle nonetheless. 

Either way, it's interesting to see what the cross-section of AI and automation can produce that doesn't involve it being "light outs for us all," according to one CEO. I nor PC Gamer endorse cheating or scamming your way out of doing homework. We do think it's cool, though. 

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Jorge is a hardware writer from the enchanted lands of New Jersey. When he's not filling the office with the smell of Pop-Tarts, he's reviewing all sorts of gaming hardware, from laptops with the latest mobile GPUs to gaming chairs with built-in back massagers. He's been covering games and tech for over ten years and has written for Dualshockers, WCCFtech, Tom's Guide, and a bunch of other places on the world wide web. 

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Students 3-D Print Their Math Homework

students and a pendulum clock

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A mathematician and a STEM education researcher use 3-D printing to teach Calculus 3 and see how it may change students' attitudes towards math.

The majority of students in Calculus 3—multivariable calculus with technology—are not math majors. They are mechanical engineers, civil engineers, biologists, computer scientists. And those are people we want to make sure do their calculations correctly. The two-dimensional and three-dimensional calculus they learn in calc 3 helps them assess everything from water flowing through a dam, to heat transfer in materials, to the mechanical stress on a gear.

That's useful information, but everyone agrees: the hardest part of multivariable calc is learning to grasp the shapes on the textbook page in real dimensions.

That's why Cécile Piret, an assistant professor of mathematical sciences, and Joshua Ellis, an assistant professor of science, technology, engineering and math (STEM) education, decided to have students 3-D print their homework.

"The goal is visualization," says Piret. "We need to make the math tangible and show how the real-world pieces work."

"It's easier to see all the sides—and it's better than copying someone else's drawing from the board." Julia Manzano, Carly Huggins, environmental engineering majors

Handheld Math Homework

The idea itself is not new. Ellis and Piret say that progressive math educators have been calling for using 3-D printing in calculus classes for at least five years. The problem is that few people have documented its effectiveness.

students and a pendulum clock

Ellis is working with Piret and her classes to assess how well 3-D printed homework assignments help teach key concepts. The students built a clock tower with a Graham escapement and filled out surveys before and after the 3-D printing assignment to gauge if their outlook on math changed. The researchers plan to publish their results within the next year and, so far, they're optimistic about using 3-D printing in math classes.

"In other venues, we know hands-on experiences enhance student learning," Ellis says. "In this case, you can show me a student who passes a test or you can show me a student who builds a working clock."

3-D in Real Time

Thumb tacks. Cardboard. Metal Racking. Paperclips. A small brass weight. A bit of PLA filament. These are some of the building blocks for the pendulum clocks that students built in Piret's calc 3 class.

The clocks themselves demonstrate isochronism, the equal subdivision of time. The clock uses a 3-D printed escapement wheel tethered to a small weight that swings back and forth as a pendulum. The goal is to make the pendulum keep perfect time, tick-tocking back and forth as the weight slowly sinks to the tabletop. The students measured the length of the pendulum rod and calculated the angle of its swing to keep time properly. Friction, height, weight and the rod's center of gravity all matter.

Preview image for  video

Learning Objectives

"Basically, integrals got a whole lot harder."

Chase Scheel, a mechanical engineering student in the class, explains that the early days of single derivatives and integrals are gone. Integrals—the core of any calculus class that describe an area or volume—get more complicated with more dimensions. They become double and triple integrals.

"With 3-D printing, the problem becomes a tangible object, so it's easier to understand," Scheel says, adding that he feels lucky his high school calc teacher used 3-D printed objects in class.

student and a pendulum clock

"What is incredible about 3-D printers is that one can now easily print, for instance, inventions by Archimedes or by Leonardo da Vinci," Piret says, adding that learning math by building a handheld model is appealing to engineering students. "Moreover, it is the case that, historically, breakthroughs in mathematics often emerged from a need to understand and solve concrete engineering problems." 

For instance, in the 17th and 18th centuries, when navigation was central to trade and to territorial expansion, knowing one's position at sea was critical, but also difficult. A solution to the "longitude problem" was to build a device that could accurately keep track of time on a boat, despite potentially harsh weather. Christiaan Huygens spent years studying this problem, clocks and isochronism: in the mid 17th century, Huygens invented the pendulum clock, and although it didn't solve the longitude problem, it would be the most accurate timekeeping device until quartz clocks in the 20th century. His extensive work influenced the founders of calculus, Isaac Newton and Gottfried Wilhelm Leibniz.

Piret's students won't need to navigate the Cape of Good Hope but their homework does take their class into uncharted territory. Their 3-D printed pendulum clocks are both a throwback to old-school calculus and a new way to think about math education.

Michigan Technological University is a public research university founded in 1885 in Houghton, Michigan, and is home to more than 7,000 students from 55 countries around the world. Consistently ranked among the best universities in the country for return on investment, Michigan’s flagship technological university offers more than 120 undergraduate and graduate degree programs in science and technology, engineering, computing, forestry, business and economics, health professions, humanities, mathematics, social sciences, and the arts. The rural campus is situated just miles from Lake Superior in Michigan's Upper Peninsula, offering year-round opportunities for outdoor adventure.

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5 Free Educational Resources for 3D Printing

Marketing team, news on july 09 2018.

5 Free Educational Resources for 3D Printing

Five FREE Educational Resources for 3D Printing

One of the most common questions we receive about 3D printing is, “How will my teachers be able to use 3D printing in a way that aligns with our curriculum?” While many educators agree on the benefits of 3D printing (it’s engaging and motivating for students, it’s hands-on and great for PBL, and it can be applied to real-world problems – just to name a few), they struggle to find ways to integrate 3D printers into their daily lessons and activities. Fortunately for educators, whether it’s 3D models, lessons, or activities, there are plenty of free educational resources for 3D printing available that can help.

Below are five resources that Teq recommends to assist educators as they incorporate 3D printing into their curriculum. While Teq sells MakerBot and Ultimaker 3D printers, and many of the resources below are associated with these brands, these resources can be used with any 3D printer on the market.

Thingiverse

Thingiverse is the largest 3D printing community in the world, and Thingiverse Education provides over 300 free lessons using 3D printing for a variety of grade levels and subjects.

In addition to education-specific lessons, there are over a million 3D printable designs that have been created by the Thingiverse user community. Speaking of the community, it’s a great resource for anything you’d like to know about 3D printing – be sure to check it out.

When searching Thingiverse Education, you can choose to search in nine different subject areas (art, engineering, geography, history, languages, math, science, special ed, or technology) and grade levels from kindergarten through higher ed. Each lesson includes a detailed activity plan with step-by-step instructions, learning objectives for students, assessment suggestions, and access to any pre-designed files needed. It also includes information on grade levels and subjects the lesson applies to, the materials required, the estimated duration of the lesson, optimal print settings, and design tips.

Thingiverse was started by Makerbot , so you will see a lot of references to Makerbot on the website, but these resources will work for any of the 3D printers in your classroom.

Makerbot Educators Guidebook

In our opinion, the Makerbot Educators Guidebook is the definitive how-to on 3D printing in the classroom. A digital copy is free, but you can order a print copy for $50.00, which is well worth it. In addition to being a crash course on 3D design and printing, the guidebook includes nine classroom-ready projects with step-by-step instructions. The core standards to which they align for both the Next Generation Science Standards (NGSS) and the Common Core are also included.

Each lesson is clearly outlined and easy to follow, with information on the estimated time it will take to complete the lesson, subject area, grade level, difficulty, prep time, and required materials. The step-by-step instructions are accompanied by full-color pictures of the parts to be printed, as well as the lesson set-up.

Along with the pre-designed lessons, the guidebook also includes information on preparing your classroom for 3D printing, choosing the optimal setting for your print, navigating Thingiverse, and creating your own project on Thingiverse Education. It also provides an introduction to 3D modeling and tips on post-processing your 3D prints. If you have a MakerBot printer specifically, the guidebook also includes information on MakerBot software and on how to unbox and set up your printers.

Again, if you are new to 3D printing, this is a great resource, and one that you will go back to time and again. It can also serve as a template if you are documenting your own lessons to use each year, or to share with your colleagues.

Ultimaker Core Lessons: STEAM Set

The Ultimaker Core Lessons: STEAM Set will get you up and running with designing and printing. Designed by Ultimaker’s North America Community Team, these lessons give students hands-on experience with the printers and get them excited about learning STEAM subjects. The lessons are based on feedback and guidance from STEAM educators and are recommended for students ages 10 and up. In total, there are 8 different lessons, with each outlining the lesson objectives, skills learned, which resources are required to complete the lesson, and step-by-step instructions from the design phase through the print phase. Some of the primary skills learned using these lessons include executing Boolean operations, producing digital models, and understanding different rapid prototyping techniques and geometric concepts.

Teq Tip Videos

Teq Tips hosts an entire library of useful classroom videos. Our primary goal is to deliver state-of-the-art instructional technology tips perfect for the modern classroom. We have a few videos on getting started with the MakerBot or Ultimaker Printers. Our videos on unboxing your MakerBot or Ultimaker printers include details on how to set up the hardware, how to connect the printers to Wi-Fi, what is included in the boxes with each printer, how to calibrate or level the printers, and how to run a test print to make sure the printers are ready for classroom use. We also have videos on how to replace materials on the MakerBot printer , and how to swap out print cores on the Ultimaker printer .

Makers Empire

Makers Empire has a wide range of online resources, most of which require a paid subscription. However, there are a few things that they make available for free, including 3D printing lesson ideas. In this section of their website, there are approximately 25 different topics to help you generate ideas for both how and why you might incorporate 3D printing into your curriculum, including how teachers are enhancing STEM learning with 3D printing  and encouraging girls in STEM . Their blog is full of good 3D printing content as well, and you can find plenty of teacher testimonials and information on the value of teaching design-based thinking.   While most of the content is around their software and community, Makers Empire is definitely worth exploring.

Further Resources

We hope these free educational resources for 3D printing have put you on the path towards adding 3D printers to your classroom. If you are looking for specific information on 3D printing that you can’t find online, don’t hesitate to reach out to Teq directly at [email protected] .

In addition, if you would like to learn more about 3D design, check out our online professional development course Teaching with Tinkercad . In this 45-minute interactive session, you will learn how to get students up and running with this 3D design application, and explore the built-in lessons available for educators via Tinkercad .

To learn more about how 3D printing can benefit your school, download our eBook “ Why 3D Print in the Classroom? ”

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Make DIY Homework Writing Machine at Home

Drawing Robot/Pen Plotter/Drawing Machine is an Open Hardware version of the famous machine AxiDraw which it is a pen plotter, capable of wr

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Make DIY Homework Writing Machine at Home

Step 1: parts and materials required, step 2: 3d printing, step 3: assemble the x-axis, step 4: assemble the x-axis bearing, step 5: assemble the y-axis.

  • Step 6: Assemble the X-Y Axis (Belt

Step 7: Assemble the Z-Axis

Step 8: ​electronics, step 9: software, step 10: drawing machine at work.

  • Comments (8)

DIY Projects Lab

Things used in this project

  • Buy from Newark
  • Buy from store.arduino.cc
  • Buy from Adafruit
  • Buy from Arduino Store
  • Buy from CPC

SG90 Micro-servo motor

SG90 Micro-servo motor

Stepper motor driver board A4988

Software apps and online services

Arduino IDE

Hand tools and fabrication machines

3D Printer (generic)

3D Printer (generic)

Drawing Robot/Pen Plotter/Drawing Machine is an Open Hardware version of the famous machine AxiDraw which it is a pen plotter, capable of writing or drawing on almost any flat surface. It can write with pens, permanent markers, pencils, and other writing implements to handle an endless variety of applications.

Its unique design features a writing head that extends beyond the machine, making it possible to draw on objects bigger than the machine itself. The biggest advantage of the machine is that it can be placed over the book because of the core XY extending design of the machine.

This Drawing Robot/Pen Plotter/Drawing Machine is similar to the commercially available AxiDraw. It is powered by an Arduino Uno controller, uses a CNC Shield, and GRBL firmware

The cost to build the Drawing Robot is between $75 depending on where you buy your parts and whether you already own some of the parts such as the Arduino.

You can find all of my projects on https://www.diyprojectslab.com/

Maximum drawing area 24 * 30 CM.

Thank You NextPCB

This project is successfully completed because of the help and support from NextPCB. Guys if you have a PCB project, please visit their website and get exciting discounts and coupons.

Free shipping 0$ PCB Prototype: https://www.nextpcb.com/pcb-quote?act=2&code=Romeo...

Thanksgiving Christmas lucky draw 100% win: https://www.nextpcb.com/christmas-lucky-draw?code...

2 x Nema 17 Stepper Motors Amazon.com

2 x Linear Rod M8 x 450mm for X Axis Amazon.com

2 x Linear Rod M8 x 350mm for Y Axis Amazon.com

2 x Linear Rod 3mm for Z Axis (you can get it from old CDROM)

1 x Threaded Rod M8 x 480mm8 x LM8UU Bearings Amazon.com

1 x Servo Sg901 x Spring 5m (from ball point pen) Amazon.com

2 x GT2 Pulley, 16 teeth Amazon.com

5 x Bearing 624zz Amazon.com

1 x 2000mm GT2 belt Amazon.com

1 x Arduino Uno Amazon.com

1 x CNC Shield Amazon.com

2 x A4988 Stepper driver with heatsink Amazon.com

6 x Jumpers Amazon.com

1 x 12V 2A Power Supply Amazon.com

  • 4 x 5/16in-18
  • 13 x Phillips M3-0.5 x 16mm
  • 4 x Phillips M3-0.5 x 6mm
  • 5 x Phillips M4-0.7x 35mm
  • 1 x Hex M3-0.5 x 20mm
  • 4 x 5/16in washer
  • 4 x M3 washers

Download the files from Thingiverse

Open the 3D models in Cura or any other slicer.

Use 75% infill on all the parts (An infill of 70 – 100% will work as well)

Printed all the parts with 0.10 – 0.20 mm layer height

Printed with PLA

Use supports on the Penholder, Slider, X_Support_L and the X_Support_R

Note: The longest part took around 10hrs and the shortest took 30 minutes to print

PLA is fine for this design. I print at 200C on BuildTak. None of the parts require rafts or brims. I suggest supports only for the pen holder and the Z axis end plate which is standing up.

Remember that you need (2) 350mm and (2) 450mm long linear rods

Take the (2) 450mm linear rods and insert them into either x-support part

  • Use may need to use a round file to smooth out the holes that you insert them in
  • Also, you can use a rubber mallet to help insert the rods

Now take the threaded rod and insert it in the hole below. Feed a 5/16in washer and 5/16in nut on both sides of the x-support part

Now you want to push the LM8UU bearings into their place on the top and bottom clamshell (The top and bottom clamshell take (4) bearings each)

Take (4) 624zz bearings and push them through the 3D-printed idler pulleys. Leave the 5th bearing for later when you assemble the Y-axis

Assemble the X-Axis (Carriage)

  • Get (4) M3-0.5 x 20mm screws, (4) M3 nuts, (4) M3 washers and (4) 624zz bearings with the idler pulleys installed
  • Take one screw and feed a washer through it, the washer will rest on the bearing. The nut will be at the bottom of the carriage, which will secure the bearing in place

Assemble the X-Axis (X-Support)

  • Slide the clamshell through the 450mm (X-axis) linear rods
  • Use a rubber mallet again to attach the last X-support on the linear rods
  • Make sure that the rods stick out equally on both sides
  • Slide the other end of the threaded rod through the hole on the X-support
  • Put on the last set of nuts and washers to hold the X-support in place
  • Now that the X-axis is complete, you can use (2) Phillips M3-0.5 x 16mm screws per X-support to help keep the linear rods from sliding
  • Take the (2) 350mm linear rods and insert them the Y-back piece by using a rubber mallet
  • Get (1) M4-0.5 x 35 screw, (1) M4 nut and the 5th 624zz bearing
  • Get (2) M3-0.5 x 16 screws to secure the linear rods
  • Slide in the bearing when inserting the screw through the Y-back piece
  • Slide the the linear rods/Y-back piece through the LM8UU bearings and attach the Y-front piece using a rubber mallet

Step 6: Assemble the X-Y Axis (Belt)

  • Use a pair of needle nose pliers to help guide the GT2 belt more easily through the clamshell
  • Take the two ends of the belt and slide them through the “teeth” on the Base Slider
  • The belt should be tight and not loose
  • Note that once the GT2 belt is on, it is normal for the clamshell not to move easily
  • Get (2) 3mm linear rods and the following 3D printed parts (Slider, Pen Holder, Base Slide, 3MM Metric Thumb Screw)
  • Get (1) Hex M3-0.5 x 20mm screw and the Metric Thumb Screw and push them together. Use superglue to keep it together.
  • Get (3) M3-0.5 x 16mm screws which you will use the secure the Base Slide to the Y-Front part. You may need to use (3) M3-0.5 nuts in order to hold it in place
  • Push the Slider and Pen Holder together to make one piece
  • Now take that new part and the (2) 3mm linear rods and slide the rods through the holes. Place a small spring in between the two parts so there is a little bit of pressure to lift the Slider. You may need to cut the spring a bit until there is an adequate amount of pressure on the slider.

ELECTRONICS

I prefer you can use Arduino uno CNC Shield

Ready to your all circuit

1) 4pcs A4988 Stepper Motor Driver

2) Expansion Board A4988 Driver

3)Arduino UNO First of all take hit sink and stick on A4988 motor Driver.

4pcs A4988 Stepper motor driver connect on expansion board A4988 driver module, then connect the arduino with expansion board and connect all wiring The shield also has a built-in micro stepping control - meaning that instead of using full steps or half steps like a large CNC would do, we can make the motors move by 1/16 or 1/32 of a step to make the laser move with the maximal precision possible. However, the motors will consume more electricity: they will get hot quicker.

To use the micro stepping modes, short some of the mode pins together. Different combinations give different resolutions. Take a look at the chart for the different configurations possible. When the shield is programmed, add the A4988 drivers to it and wire up the rest of the electronics.

To find the coils of the stepper motors, use a multimeter. If there's resistance between the two wires, you have a coil. On the schematic, the coils are represented by two wires of the same color.

Inkscape which is the graphics design software (draw or import graphics)

Inkscape MI GRBL Extension (convert graphics to G-Code)Universal G Code Sender (sends the G-Code to the robot causing drawing motion)GRBL which is the Arduino firmware (programmed into the Arduino Uno)

Arduino: https://www.arduino.cc/en/software

Universal G-code sender: https://winder.github.io/ugs_website/...

Inkscape: https://inkscape.org/release/inkscape..

4xiDraw & km laser: https://drive.google.com/file/d/1YO8-...

Processing: https://processing.org/download/

drawing to G-code processing: https://drive.google.com/file/d/1PIFx...

watch video for full setup

hookup_QLVR1z3Ob1.jpg

3d print homework

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Yashas Basavarajappa BME 66

Yashas Basavarajappa BME 66

Homework 3 3D Printing

The initial lecture on 3D-printing really piqued my interest in the technique and I was excited to be able to try it on my own. I had never used a 3D printer before, and I planned to use the ones available in the Nolop facility. I decided to print my computer monitor that I had designed for the CAD homework as I felt that it wasn’t too hard to orient to print and I was curious to see how my design would look once printed.

3d print homework

Because the monitor had no moving components, there was no need to take it apart and print it in individual parts. This was pretty relieving to find out because it meant a bit less work for me; all I needed to do was orient the monitor and press print. I initially saved the CAD design as an STL file and uploaded it to the printer to try to print. This did not work because the design was way to big. I had designed the monitor screen to be 20 cm which meant that it was too large for the surface of the 3D printer. To fix this I went back into SolidWorks and scaled down the model to 0.2x the original size. Then, I re-exported the design as an STL file and uploaded it to the printer. This time the design was more scaled and fit onto the surface of the 3D printer.

3d print homework

Once uploaded, I tweaked a few additional details on the 3D printer to add a raft base to the print. This was to ensure the print was better adhered to the surface of the 3D printer and supported throughout the print process. Hairspray was also used prior to starting the print for the same reason.

3d print homework

Once started, there was not much else for me to do other than wait for the printer to finish. On the 3D printer website, the estimated print time was a little over an hour and that prediction turned out to be fairly accurate. I sat in Nolop for roughly 1.5 hours while I waited for my print to finish. Once it was done I took it off the printer thinking my job was done. However I realized that I still needed to get rid of the additional supports that were created during the process.

Image preview

To remove the additional supports, I used an exacto knife to cut away at it. This was a pretty tedious process as my print was small enough to the point where it was very delicate. Going too rough with the exacto knife could easily break my print so I decided it was best to go slow and steady. Though it took a bit longer than expected, I managed to cut away all the supports and was left with my final 3D printed computer monitor

3d print homework

I was pretty happy with my final print. It did resemble my own monitor and I was happy that it was able to stay upright on its own. Initially, I was unsure if the supports I designed in SolidWorks were big enough to support the monitor and I was glad that it worked.

If I were to do this project again, I would definitely scale the print to be a bit larger. I think this adjustment would give me much more leeway with cutting out the supports, which was definitely the most difficult part of this project. Additionally it would also make the print itself more robust. After taking the pictures of the final print, the monitor lasted roughly 5 more minutes before breaking apart. When I picked it up for a closer look, I had accidentally put too much pressure on one point and it cracked apart. This was because the attachment point of the base and cylindrical mount to the screen was so small that it broke apart very easily. A larger print would take a much longer time to print, but the end result of a much sturdier monitor would be well worth it. Although the print was pretty good, I also think making improvements to the design itself would help. I designed the monitor without thinking of the eventual 3D print in mind; keeping such an important fact in your head is crucial when creating a practical CAD design. Depending on the kind of 3D printer you use, some designs will be more feasible than others.

Overall this project went a lot smoother than I anticipated. I was able to create a successful print on my first try and I still believe that I learned a lot from this experience. It was a good introduction to the software and overall process of 3D printing, and I feel more prepared for creating a prototype for my group project. 3D printing can save a lot of time when designing an object as other technologies can be less efficient. For example a lot of objects that are sculpted (statues, pottery, etc) could be created much more quickly by using a 3D printer. In the future, 3D printing can become more prevalent in surgeries when creating rods or stents. It may also be possible to develop replacement bones/joints in the future. Furthermore since the material used in 3D printing can be interchanged, it is also possible to 3D print food. Currently, research is being done to create a 3D replica that mimics the texture and flavor of meat. New discoveries are being made everyday and I think utilizing the 3D printing process is an essential tool for exploring and pushing the horizon of Biotechnology.

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3D models tagged with HOMEWORK

Explore collection of homework designs that are perfect for your 3D printer. Download and 3D print STL models tagged with homework.

ObiWanJabroni

Page Marker / Holder - 1 Minute Print!

Mukpon

Dual orientation pen holder

mbzirsch

Paint whisk

Johannes

Pen Plotter core XY

Okan Kalaycı

Universal-ish Garbage Clip For Your Desk

Saleh

Back to School Homework Reminder Key Chain

Quandolin

Paper/Document Holder

Vaughnator

Homework Pass for teachers or Students.

Stéphane Lauper

The Remote Learning Tower (for homework also)

Bea Res

Customizable Board

Download 29 3D print files tagged with keyword Homework

Download designs for 3d printer homework.

bin.jpg pencil sharpener bin

pencil sharpener bin

IMG_20190423_113105.jpg Electricity School Experiments Test Homework

Electricity School Experiments Test Homework

IMG_5554.jpg Fridge Magnetic Sentence - Do your homework

Fridge Magnetic Sentence - Do your homework

20230118_175240-1.jpg Probably Useless Straight Edge

Probably Useless Straight Edge

ph1.png pen / pencil holder "brutalism"

pen / pencil holder "brutalism"

supporto_webcam_gopro_slim.png monitor webcam support with GoPro attachment

monitor webcam support with GoPro attachment

IMG_1535.jpg Pen and Post it desk holder

Pen and Post it desk holder

IMG_2185.png Custom Stanley Cup

Custom Stanley Cup

IMG_20231231_181231.jpg NO EXCUSES the family dice!!! #DICEXCULTS

NO EXCUSES the family dice!!! #DICEXCULTS

untitled.6783.jpg Tool Organizer Hanging Wrench Rack / Support clés suspendu pour outils

Tool Organizer Hanging Wrench Rack / Support clés suspendu pour outils

untitled.6782.jpg PERFORATED WALL PANEL / PANNEAU MURAL PERFORÉ

PERFORATED WALL PANEL / PANNEAU MURAL PERFORÉ

IMG_7260.jpg Desk Organizer

Desk Organizer

20230818_222138.jpg Checklist A5 Stencil list template

Checklist A5 Stencil list template

IMG_0398.jpg Stamp homework forgotten

Stamp homework forgotten

Unbenannt.jpg Wall mounting corner for wine rack or the like

Wall mounting corner for wine rack or the like

Read-kit-part-1-2-3-4.jpg Speed_Read Device

Speed_Read Device

Cell-represent.png Animal Cell

Animal Cell

Punctum pocket phonestand, virga phonestand right.

Untitled-Project-5.jpg Math-teaching stamp for kids

Math-teaching stamp for kids

cardholderfront.png Productivity List and Card holder

Productivity List and Card holder

WhatsApp-Image-2022-05-26-at-2.27.09-PM.jpeg Matte matting/desktop cup

Matte matting/desktop cup

IMG_20220508_214540.jpg Pencil sharpener shaped pencil

Pencil sharpener shaped pencil

IMG_20211229_222939_969.jpg XL pen holder with hidden compartment

XL pen holder with hidden compartment

pencil box.png pencil box

Desk organizer

Pes phonestand.

Capture d’écran 2016-12-08 à 11.28.34.png komodo dragon

komodo dragon

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3DSourced

16 Best Sites for STL Files & 3D Printer Models 2024

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Written by: 3DSourced

January 7, 2024

Not everyone has the time to spend 10’s of hours designing new print models. Sometimes, you just want to print something cool.

Luckily, downloading amazing STL files for free has never been easier.

For 99% of users, the platform I’d recommend getting started with is Thingiverse . They’re the largest free STL file site in the world, with models for anything you can think of. This community-driven platform has a straightforward and intuitive interface that makes browsing STLs by category and popularity easy to find exactly what you need.

While Thingiverse is the best overall, I’ve also thoroughly used and tested 15 more sites, and compared each below across all the important criteria – library size, filtering options, ease of use – as well as any hidden benefits I’ve discovered

So let’s work out where is best for you to get your 3D printer files!

Quick Overview

Part 1 : Sites hosting only free STL files

  • Thingiverse – Largest selection of free STL files
  • Instructables – Free 3D Printer files with great guides
  • NASA – Free space-related 3D printer models
  • The NIH 3D Print Exchange – Free Medical 3D Printer Models

Part 2 : Sites hosting both free and paid-for 3D printer files

  • Cults – Many free STL files as well as premium 3D printer models

Part 3 : STL file marketplaces

  • MyMiniFactory

Part 4 : STL file search engines

  • STLFinder – STL file search engine for searching other sites
  • 3DfindIT.com – Site for downloading industrial 3D files

Completely Free STL File Repositories

1. thingiverse — largest selection of free stl files.

thingiverse stl file website

One of the largest free STL file sites in the world, Thingiverse was first set up by 3D printer company Makerbot back in 2008 so users could upload their 3D printer model designs for the world to download and print. The repository how hosts an incredible range of STL files that you can download for free, with no registering necessary.

Not only can you download these free 3D printer models, but you are encouraged to post your prints and edits and remixes. You will undoubtedly find dozens of great 3D printer models for you to 3D print on Thingiverse, ranging from video game or TV/film characters, 3D printed miniatures , decorative models, and STL files for holding your pens and stationery.

2. Instructables — Free 3D Printer files with great guides

instructables 3d printer file site

Owned by Autodesk, Instructables is a free STL file and general project building site that encourages designers to post step-by-step instructions on how to assemble and build these intriguing projects.

With a full range of projects, not just for 3D printing but involving electronics and other projects also, Instructables focuses on the educational aspect. Simply pick a project you find interesting – such as their 3D printed CO2 canister rockets and launchpad – and print and assemble the project in steps as per the designers’ instructions. This is great for gaining experience and confidence in 3D design and printing, and general engineering and DIY skills.

Instructables is also great for families looking to build a fun project together while teaching their children about engineering, and assembling something from parts.

grabcad

GrabCAD is a general 3D file hosting site, catering to not only 3D printing fans, but anyone with an interest in engineering or 3D modeling.

The site includes files for parts of 3D printers for building and modifying open source 3D printers , as well as sophisticated engine designs for planes and other large feats of engineering, as well as cars, and appliances. Many are not STL files, but instead are OBJ files or other types, which are usually still fine for 3D printing (OBJ files are fine), having been designed on 3D CAD software like Fusion 360, Solidworks or Autodesk AutoCAD.

4. NASA — Free space-related 3D printer models

nasa 3d printer models library

NASA have an online portal where they host some of the most iconic moments in human spacefaring history as free STL files, so fans at home can print out and enjoy them. You can download and print Apollo landing sites, the Cassini spacecraft, various well-known asteroids, the Curiosity Rover, Hubble space telescope, and many more.

A great and free way to print all your favorite space models, NASA’s free 3D printer models will inspire your children, and make for a great 3D printing project to paint so you have a mini spacecraft on your desk.

5. The NIH 3D Print Exchange — Free Medical 3D Printer Models

nih 3d print exchange for free medical 3d printer models

The National Institutes of Health , like NASA, offer some very important free 3D printer models for download as STL files. These are often medical models, such as STL designs of molecules related to biomedical science, as well as 3D printable hearts , 3D printed prosthetics for amputees, and a variety of face shields – especially relevant during COVID-19.

Sites Hosting Free & Paid STL Files

6. cults — many free stl files as well as premium 3d printer models.

cults 3d stl files

Based in France, Cults has hosted STL files since 2014 and now hosts over 120,000 fantastic downloadable 3D printer files that receive over 17 million page views per month.

Before printing your chosen design, Cults gives you the opportunity to see exactly how it will look, as many designers include pictures of the final print, sometimes even showing how the model will look once you’ve painted it, with gifs of how the model looks in the real world. This can be really handy for visualizing the final print, especially if it involves multiple parts.

Talented 3D designers can also offer their premium 3D designs for a few dollars each, which can add up if you build a legion of fans on Cults’ platform.

7. Pinshape

pinshape

Pinshape is a great STL file hosting site with mainly free 3D models, but also features paid-for premium 3D printer files by professional designers.

Entire families will find fun projects for creative family time, as well as a huge variety of well-known franchise characters, tabletop game characters, and complex 3D printable puzzles for collaborative fun.

Pinshape also showcase innovative 3D designers on their featured designer page. It’s always worth checking this page out, as a particular designer may create perfect 3D printer files that you love, and that you may not have known about beforehand.

free3d printer models and files

Free3D hosts 3D designs encompassing not only 3D printer files, but general 3D models for animation, as well as those designed in advanced 3D software modeling tools such as Cinema 4D and Maya for specific applications.

A selection of the downloadable tools available on Free3D include intricately designed gunships, animal character designs, 3D printable cars , and more. Free3D also offers paid downloads, usually for under $10, for premium STL files.

9. 3DExport

3dexport

Offering both free and paid STL files, 3DExport separates models into distinct and easy-to-navigate categories, so you can instantly search through files for characters for animation, or any other category you’re interested in.

You can buy and sell your models and STL files, and having been around since 2004, 3DExport is one of the first 3D file marketplaces around, with a large fanbase of visitors and sellers offering great 3D models for 3D printing and other uses.

STL File Marketplaces

10. myminifactory.

myminifactory

With both free and paid 3D models to load in your 3D slicer and print, MyMiniFactory is an online STL file marketplace attracting some of the best 3D designers around.

With an easily navigable site, for example if you’re particularly looking for board games models and characters, you’ll easily find what you’re looking for, whether that be a Pokemon chess set or D&D miniature .

For any budding 3D designers, MyMiniFactory offers an avenue to some extra income. You can own your personal store and offer your STL files for download for a fee. Overall, MyMiniFactory hosts a great variety of 3D printer models for hobbyist makers.

11. CGTrader

cgtrader

CGTrader is a more professionally focused 3D printer file marketplace with professional architecture software models, interiors, and textures available for purchase.

Professional designers have their own stores and sell their models, and there is also an option for businesses and makers to publish their problems, for example if they need a model recolored, fixed or redesigned, and designers can bid for the contract.

For professional models, CGTrader may have the most extensive selection. However, those looking for free models will prefer a site like Thingiverse.

12. TurboSquid

turbosquid

Another 3D model site geared toward professionals, and at professional prices, those with deep pockets for the creation of film, animation, and video game projects, as well as any very expensive 3D printing, will find TurboSquid beneficial.

For example, TurboSquid hosts extraordinarily detailed files, including a fully designed International Space Station for $1,299, or completely designed human anatomical models – with bones, circulatory systems and all – for $1,799.

TurboSquid does also host some free 3D models, though some are less suited to 3D printing.

13. Sketchfab

sketchfab 3d printer files STL

Sketchfab has a vast library of high-quality, full-color designed 3D models for animation and film, as well as many 3D printable files. These detailed, meticulously designed files are downloadable for free if you create an account, with other files paid-for only.

Sketchfab also offers 3D visualization and design services for businesses looking to have their designs, for example for a product or building project, designed in 3D. This has benefits for showcasing your product, especially in areas such as e-commerce photos, where instead of having multiple product photos at different angles, you can just have a 3D model that visitors can rotate.

STL File Search Engines

14. stlfinder — stl file search engine for searching other sites.

stlfinder stl file search engine

An STL file search engine, STLFinder doesan’t host any of its own files, but allows you to search a term, for example “DnD” or “boat” and see all the 3D models from existing repositories such as Thingiverse.

STLFinder also contains some recently searched keywords for any 3D printing inspiration, and is a useful way of accessing 3D printer models quickly instead of searching each model on each site individually.

yeggi stl file site for 3d printer files

Another search engine similar to STLFinder, Yeggi has slightly more features available to help you find the perfect 3D printer file you’re looking for.

Featuring around 2.5 million STL files to search through, Yeggi can connect you with all your favorite models in just one search, with buttons to bring up a random model, to view the most popular models, and popular categories such as toys , RC-related designs, and more. Yeggi cuts out the middleman and helps you access the coolest 3D printer models on every site at once.

16. 3DfindIT.com — Site for downloading industrial 3D files

3dfindit 3d cad models for 3d printing

3DfindIT.com functions as a free 3D model search engine which connects you to 3D CAD and similar file models from different companies’ catalogues. Not only can you custom search for your own desired part or model, but you can also search by shape, color, and functionality or check their keyword list for items like hinges, actuators, and more.

Their site will even compare the model you are currently browsing, scanning across its catalogue for other similar models and giving you a percentage similarity score. This is great for finding the ideal part for your needs. It skews more towards industrial parts and designs rather than hobbyist homemade projects, and functions very well as a search engine for freely available professional 3D models.

Other articles you might be interested in:

  • STL Editors – best free and professional options
  • Best 3D printer software
  • Best 3D slicers
  • Thingiverse alternatives
  • Best 3D printer software tools .

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    TikTok user 3d_printer_stuff shared a series of videos detailing how it all came together, including one tutorial that shows the same steps you'd need to take if you wanted technology to do your homework, too. The student began by opening up ChatGPT and entering the task in the program. They then instructed the AI to write the assignment.

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