3D Printed Lessons

I developed some 3D printed lesson plan 'pass-arounds' for a class I was teaching. Because of websites like Reddit, there has been a resurgence of my posting the links and information about them. I did not design the CAD files, however printed these existing CAD models and packaged them in a way to present the information needed.

I printed 3 heads, and chemically smoothed them to show how ABS plastic can be finished. Head (1) has no smoothing, head (2) is vapor smoothed, and head (3) is then smoothed and then painted. Original: https://www.thingiverse.com/thing:196044

I wanted to show how you can print links and how supports work, before breaking them off. Edited from Original: https://www.thingiverse.com/thing:2043420

This is a lesson in printing in one piece. It's designed to show how tools can be created by printers without supports, in one entire piece. The platform jack had to be reduced from the original file to fit the display, and when the file is shrunk, the parts fuse together. It presented a huge challenge, but eventually was printed successfully.

Platform Jack: https://www.thingiverse.com/thing:925556

This gets printed in 10 pieces and then assembled. From a printing standpoint, it's not overly challenging, but it's meant to serve as a teaching aid, and how amazing 3D Printing is at helping other teachers discuss jet engine engineering.

Original File: https://www.thingiverse.com/thing:405104

I took a femur, edited it, then made a mock-up implant and printed it in green to show what was possible. An actual real-size hip implant is next to it. Doctors and inventors use 3D printed parts both to test concepts, and in some cases, actual plastics are inserted into humans to support bone and tissues.

Infill is the percentage of plastic inside the product. It can change the flexibility as well as strength by altering the infill.

I got a free sample of NinjaFlex rubber, so I printed a shoe. For my first print, it's a mess but I got it to print a doll-sized rubber sneaker. I kept it because when people see that they could theoretically print sneakers, it encourages creativity.