Adding a motor to Hario coffee grinder
Tldr: Longer story: I was getting tired of hand cranking coffee beans in the morning, and did not want to by an expensive motorized grinder. I already have this grinder, it just needed a motor of some kind. Turned out that the threads where the crank was attached, is standard machine(?) threads, so an off-the-shelf splicing nut in the correct size fit perfectly. Then attach a correctly sized socket to any drill (even this cute Bosch was powerful enough) and start grinding!