Good luck getting any shop well-equipped enough to have a shoe grinder to risk enough EPA fines for spreading hazmat dust to bankrupt them. Most of those machines hit the scrap heap close to 50 years ago.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!