Claw coupler

I built a CNC machine, but the Chinese couplers I bought were hard to use (to stiff and hard to center) - so I needed a better coupler. I created claw coupler with two hubs and a damper. You can use it also in your 3d printer if you need to connect a shaft to a stepper.

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.