ORIGINAL: alex7403
No not disposable,
if I understand you want the same curve on all trims, you can mark on the back of a plate the arc that you want, put the plate upside down over the monokote and cut it.
This way you don’t cut into the cardboard and the curves are perfect.
You can use also bigger tray with a different arc or smaller plates.
good luck
Ok I get it, but the problem is that I want a really big curve that changes radius so it yields a more complicated problem. I need to cut the red monokote for the following design: