Beside his ideas on how to improve glide, that are not the object of
that topic, Kuzmin came up with tools that fit onto and Angle Grinder
instead of a Drill.

Using a tool the way it has been designed for, unlike a drill, looks
like common sense now that he came with the idea and the tools that
fit.
This is how roto-things should have been made for from the beginning !

At first I thought that a left handle would be even better but it
would also encourage to apply more pressure, which not desired with
his tools.

Laurent