We collect a mini ear from the brush. In the feed of the bathroom I found an old, forgotten, but not discarded toothbrush. Gave power from the power supply - R A B O T A E T! Throwing out the hand does not rise, so I decided to make a mini polishing wheel. Just like that, what if ... We take apart the brush
Solder the wires, USB cable
In the back cover, we drill two holes for the exit of the wires, we collect the brush. If you need a mobile version, you can leave your own food on 3 batteries, but you will have to change them as you get tired, and this is an extra cost.
From the emery paper we cut a circle to the size of the bristles of the brush
Glue the circle to the bristles
The result was a mini angle grinder powered by a 5 volt mains charge, or from a laptop.
Now with such a device you can grind, grind small parts. If instead of sandpaper, mount a mini cutting wheel, you get a mini cutter.
