This is a fully 3D printable spur gear assembly, which once together spins easily with a cool handle. Fun printing project for working out how gears work or even use it as a fidget toy. To assemble, first remove the small supports under the base and the handle arm, once removed push the handle piece into the indent/hole in the arm. Next put the large gear onto the pin of the base and secure it with one of the C clips. Next place the small gear over the remainin hole on the base and secure it with the assembled handle. Finally lock the handle in place by inserting the remaining C clip on the underside of the base. Note that all of the assembly is photographed above. Feel free to check out my other gear projects for download on my makerworld profile.