If that happens, it usually feels sharp. I wouldn't use in jewelry for others or sell with sharp areas. I've looked at those holes under magnification, and there are usually some pretty thin areas of glass where the silver popped out.
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Lynda
Cheetah, 5 lpm and 7lpm conc/generator (8-9 psi), natural gas (booster), started 11/06
"The time you enjoy wasting is not wasted time." -- Bertrand Russell
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