From: "Mel Bartels" 
To: 
Reply-To: "Mel Bartels" 


>>> How flat does my 16" mirror blank have to be?  At present
it is flat to
plus or minus .010 inch.

I like to go for .001 inch - best to grind to 220 grit and verify that
there are no low spots - don't have to get out pits or anything - just
achieve an even 220 grind.

Mel Bartels

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