https://www.youtube.com/watch?t=160&v=ovqnIBQuezA
one way is in the vid .
I have a setup for bending Versatex, Kevlar heat blankets that heat to 450 degrees. Works on Lexan as well. Maybe you can find someone in your area that has one that will heat it for you. They are expensive, my setup was $1,300 but is quite a bit larger than the one in the video.
Something you could try, sandwich your stock between sheets of 1/4" durarock or similar and heat it that way. I did that before I got the blankets.
Here it is-$7 @ local Hdwe store. No, I have used, it--but, it I ever need one.....
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David
Confidence: That feeling you get before fully understanding a situation (Anonymous)