Easy triple gear

This version adds tolerances to all the joints that need to move, adds a crank, and modifies one knob into a stand. I couldn't get the original to assemble at all, but this one doesn't demand perfection from the printer or the assembler. To assemble it, put each post through an outer gear (with a round shaft). Put the middle gear with the hexagonal shaft between the two outer gears, and put the posts through the opposite holes at the same time. (This seems impossible but it will go with a bit of fiddling.) You can then snap the oval stand/grip below the middle gear on whichever side you like as the bottom. This one is 0 tolerance and should be snapped right on. The handle will then go into the middle gear from the top.