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Re: [ATM] mirror grinding - Grit re-use
> My first mirror (8" F7.5) ended up using so little grit because I
> reused the grit for the larger sizes that I've been doing all kinds of
> other optics with the same stock of grit and still have about half of
> the 80 grit that I got in that kit. - I am cheap!
My Dad is a Geologist and over the years has collected a bunch of nice
'rocks' well he and a friend polish them...
They take the 'waste' from 80 Grit and screen it and get 320,
220 and 120 from it... I think they go all the way down to 1200 grit...
Then they use other stuff for final polish...
Tom
GotGrit.com
ps His old out of date site is yes you guessed it GotGems.com
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