On 4/25/2016 5:57 AM, Pat Horne wrote:
> Check into polycarbonate. It's tough stuff. McMaster-Carr has it.
> Don't know how thick you need.
Plexiglas is the original Rohm & Haas (IIRC) trademark for what is
generically called acrylic.
Polycarbonate is the generic term for what was originally sold by GE as
Lexan.
'Vandal proof' clear plastic is usually polycarbonate. It is tougher
and far more shatter-resistant (acrylic cracks quite easily particularly
in < 1/4in thicknesses) though it can still be scratched and will melt
if enough heat is applied.
Acrylic is commonly found in all kinds of colors and opacities.
Polycarbonate is commonly found only as clear. If you look at the edge
of a sheet of clear acrylic it looks clear; the edge of a sheet of
polycarbonate will look black. Polycarbonate filters/absorbs different
parts of the light spectrum than acrylic.
John.
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