This is a Print It Forward Project from Printrbot that is a great way to teach engineering and basic 3D printing mechanics. Students will learn what BOM means and go through the process of building a 3D printer from scratch.
I uploaded a V2 of the base. I made it a bit more stable and deep enough to allow for normal size nema motors as opposed to the small motors. Its much more stable.
I used a 50% infill for PLA to test out this build. I will use the new NylonX in the next build to test different materials.
Students will learn a great deal during this project. Between using metric tools to soldering, some wiring and the concept of rods, bearings, belts, and pulleys.
Student will learn basic engineering concepts by building a 3D printer.
High School for a more project based approach. If you want to do lower grades I would make it more of a guided project.
This projects touches most of the STEM subjects.
Skills Learned (Standards)
Standard 5: Technology
Students will apply technological knowledge and skills to design, construct, use, and evaluate products and systems to satisfy human and environmental needs.
Since this is a project it's more of a hands on lesson/activity. The instructions are pretty detailed but they'll be plenty of opportunity for student to mix things up. The instructions are attached below.
Print It Forward:
All the files for printing can be found here:
Quick video of my actual build
This list will be long so I'll try to make it easy.
Tools: Torx Screwdriver Set
A fully functional 3D printer with at least a 6" inch build plate.
Materials: I will list this in two ways.
1st- The kit is available from printrbot. Here it is: https://printrbot.com/shop/printrbot-starter-kit/
2nd- The items are listed from different places. This is how I did it because I had a lot of these and didn't want to buy the kit.
Belts and pulleys: https://www.amazon.com/gp/product/B00WW256TY/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1
8MM Rod Bearings:
8MM Rods: You'll need 6.
4 of these:
2 of these:
Belts and Pulleys:
Axis Motors: You'll need 3 and the connector for it. Both links are below.
Nuts and Bolts:
Fan Extension Cable:
Hotend Extension Cable:
Hotend Thermistor Cable:
Endstops: You'll need 2
This is most of the items you'll need I may have missed one. There are plenty of ways to get things cheaper or the solder some of the extension wires yourself. I recommend it but leave it to you since you know your students.
This project should take a few class periods to build. The overall process should be about 4-5 classes.
Teach Engineering by Making a 3D Printer!
This project is a great way to teach students the pride of building something. They'll build a working printer and by doing so understand it's basic mechanics and how to repair it.