My most recent box of Soylent came with a new sticker so I made a magnet. One set has a hole for a 20mm round magnet one set has 18mm hole, and the other has just a flat back. Like a caveman, I used the jerk and jam method for switching colors. Remember to print responsibly!
Video has nothing to do with anything
Here are the 18mm magnets I used http://amzn.to/2Fann3i (affiliate link)
Turning ideas into products with 3d printing