Claw coupler

thingiverse

I built a CNC machine, but the Chinese couplers I purchased were tough to handle (too stiff and hard to center) - so I required a better coupler. I designed a claw coupler with two hubs and a damper. You can also use it in your 3D printer if you need to connect a shaft to a stepper motor. I printed mine with ABS (hubs) and TPU (damper). You will also need some M3 nuts and bolts. I attach two hubs - one for 5mm and one for 8mm shaft. I also add a generic hub with no hole at all so you can customize it according to your needs.