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Posted by David Sherman on Thursday, March 12, 2009 at 21:54:27 :
In Reply to: Re: Early Square Gauge Glass posted by Tim Holloway on Thursday, March 12, 2009 at 20:45:38 :
Thanks. I was thinking "reverse etching" was some sort of process where you start with etched glass and then make the clear parts of it smooth, which didn't make any sense at all.