Re: tiny electric drills
I have one. It runs at 100 RPM, which is a little slow for drilling small holes, 500 would be better. At such as slow speed, the change of breaking the bit is high. Also, the optional chuck is a bit large for our purposes - I’d prefer one of those small brass chucks to hold small drills.toggle quoted messageShow quoted text
However, the MM “screwdriver” with the chuck and a reduced-shank drill bit like a 0.3mm carbide with a 1/8 shank does a nice job of drilling pilot holes. I drilled a lot of pilot holes with a pin vise, only to find out they are not perfectly where I want them due to wandering.
The MM assembly is accurate, and a slow drill bit is what you want when drilling pilot holes for stirrup steps and grab irons in resin kits. Then I follow it with a Dremel flex-tool with the same 0.3mm bit set on about 1000 rpm. Dip the drill in liquid detergent, find the pilot holes, and drill as many as you like very accurately.