how can i fix a hairline crack in a mirror? it isn't very long, about 2-3 inches. the mirror is lighted and i cleaned it w/ windex and then dried it with hair dryer. it was then that the hairline came.
You've caused a heat stress fracture to the glass by using the hairdryer on it.Glass cant handle wild fluctuations of heat and cooling without stress occurring.I'm afraid the glass is flawed forever. Any pressure applied near the crack will cause it to 'run ' further,be careful.
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