On Wednesday, 14 February 2018 17:57:10 UTC, Andy Bennet wrote:
Long story short, I've got very hard skin on my feet which can be a
discomfort when walking. I've tried the missus scholl rotating thingy
with limited success, keep stalling it.
A thought occured that I could try my random orbital detail sander with
some 60 or 80 grit - has anyone tried this - any success?

Andy

You might have athletes foot. A fungal infection.
The chemist has cream that will fix it.
You will need powder for all your shoes and a hot wash for all socks and sheets etc.to stop re-infection
https://en.wikipedia.org/wiki/Athlete%27s_foot