John wrote:

Assuming you aren't yet in your dotage and just maybe you might still have
some contact however tenuous with your old school perhaps you might be
allowed to use the aforementioned grinding stone with water lube?

Alas, no, otherwise we wouldn't be having this 'conversation'!

I'm not in my dotage, but I did leave said school before flares came into
fashion (the first time)! :-)

Rick