Lego Technic pin and axle sorter

thingiverse

I was trying to come up with a way to speed up sorting lego technic parts. There are motorized devices out there, but I was looking for something small and passive. Video: https://youtu.be/0i5w15yjyyI This design doesn't work great yet. The big problem is that the ridges on 3-pins sometimes catch on the first hole, and the hopper clogs if you put more than a few in at a time. Still, if you agitate the contents with your finger, it sorts fairly effectively. The first pin collects pins and axles of length 2. The 2nd collects 3-unit parts. 4+ unit long axles come out the end. No supports are needed. Just print and assemble per the pictures. To save filament you could use some other container instead of these bins. This is a work in progress. I'd love to hear any ideas for making it work more effectively.