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Re: [TCML] Bending acrylic
PMMA can be bent with radiant heat from a hot element. It starts to
soften somewhere around 200F, and can be bent with a dip in boiling water.
A Nichrome coil salvaged from an electric clothes dryer works fine, but
be careful to avoid electrical contact. A Calrod element from a junked
electric oven also works. Adjust the temp with a Variac. A quartz
heater lamp from an old copier machine may work if it is long enough.
The optimum distance between the plastic and element vs. the temp of the
coil and the heating time duration have to be determined experimentally
to avoid burning or sagging, so play with some scrap pieces first.
Scott Bogard wrote:
Since we have had a few machining/finishing questions on here
lately, I figured it would be ok to ask; is it possible to bend acrylic
and get it to hold it's shape. I want to make a curved piece of
acrylic, and it seems fragile and wants to crack. I'm assuming you need
to heat it, but how hot, using what kind of heat source, etc. Thanks in
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