Tell us about yourself!
You have a point. It is just that as science teachers, we need to promote the SI units and stay away from the confusing US Customary units. I invite you to join our growing association at usma.orgI promise to have my students to try making it.
Excellent work. I just wished you kept using metric units all along.
I made it, bu I noticed friction between the timing belt and the gearbox. This is not letting the gears to rotate. I will try to find a solution and I wonder if you have any suggestion.Thank you for this design.