Andy Bennet wrote:

A thought occured that I could try my random orbital detail sander with
some 60 or 80 grit - has anyone tried this - any success?

I've never needed skin motorised removal, but I do use some "foot files"
which came free from sockshop, they are like wide wooden paddles with
sandpaper glued to them (I guess about 80 and 120 grits) so I just rasp
the hard skin off with those ...