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Finishing an edge on plexiglass...
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Ed_McCarron:

--- Quote from: pmc on October 05, 2005, 02:56:26 pm ---Presumably all these techniques work for Lexan as well as Plexi? I know that they are fundamentally different animals, but I don't really care about that as long as the same edging techniques work on both.

-pmc

--- End quote ---

Don't overheat polycarbonate.  It's hygroscopic - absorbs moisture out of the air.  Get it too hot and you get nasty bubbles as the water flashes to steam.

I've bent plenty of polycarb but never had luck flame polishing the edges.  Getting it hot enough to bend without getting those bubbles takes a steady hand with the heat gun and lots of patience.
pmc:

--- Quote from: Ed_McCarron on October 06, 2005, 01:02:59 pm ---
--- Quote from: pmc on October 05, 2005, 02:56:26 pm ---Presumably all these techniques work for Lexan as well as Plexi? I know that they are fundamentally different animals, but I don't really care about that as long as the same edging techniques work on both.

-pmc

--- End quote ---

Don't overheat polycarbonate.  It's hygroscopic - absorbs moisture out of the air.  Get it too hot and you get nasty bubbles as the water flashes to steam.

I've bent plenty of polycarb but never had luck flame polishing the edges.  Getting it hot enough to bend without getting those bubbles takes a steady hand with the heat gun and lots of patience.

--- End quote ---

Well then, sanding and buffing is just plain fine with me. Thanks for the tip.

-pmc
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