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Old 03-20-2023, 01:00 PM   #17 (permalink)
j-c-c
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Quote:
Originally Posted by AdrianD View Post
Pitted glass for sure. Try getting sparks from an angle grinder on glass surfaces for a demo.
But that is stationary glass with little air movement, Try is with a fan pointed at the glass surface and I suspect the results would be much different.
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