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Old September 6th, 2008, 14:31   #33
Drake's Avatar
Join Date: Dec 2001
Location: Montreal, QC
I know that ceramic is harder (you can scratch glass with a piece of ceramic), might have something to do with it too.

I tried the ceramic thing because I was incredulous (this was way before the days of YouTube -- and yes, it was done legally on an old car an uncle was junking; he's the one who'd told me about it) and it doesn't require all that much effort. I hurled similar sized chunks of gravel at the window to compare with nowhere near the same results. So it's pretty surprising.
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