

I have a Hario mini, and yes, it is very slow when done by hand. They sell an electric motor attachment for it as well, but a hand drill works just as well, if already owned. The only consideration is making sure to tighten the drill chuck with care to the flats on the mill shaft. The mill shaft is pentagonal, and drill chucks typically have 3 teeth.





I just built a new PC with the same CPU and used a Scythe air cooler, specifically this one. They are relatively inexpensive but good quality. Running at 99.9% usage while compiling software packages, it topped out 80°C.