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Re: [ATM] Fine Grind already Blanchard ground mirror blank back?
On Fri, 9 Mar 2007, Jerry wrote:
> Wow! I think this subsurface damage thing has been taken too far. It used
> to be that 5 or 6 grades of grit would get a raw piece of glass ready for
> polish. Now it takes from 9 to 12 grades to get there and we need to do the
> back too! To a full polish!!
Sheeesh! I have used 3 and I have used 10-12. The pros only use a few.
But then, the pros have automated machines with unlimited elbow grease.
Pros are not concerned about their back and elbows. More grades means
less elbow grease. If you want a better workout and your posture can
tolerate it, use less. Those with back pain will prefer more grades,
or maybe a grinding/polishing machine.
Dominic-Luc Webb
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