A friend gave me a piece of plastic he wanted cut to size, i took a piece of scrap acrylic I had to test the measurement , which cut perfect 1 pass at 65% pwr 8mmps spd , put in his piece and barley scratched the surface. turned up power 100% 4 passes didn't get thru it. I think its melting itself back together on each pass.
Anyone have a clue as to what this stuff is? It looks like acrylic or delrin, but obviously its not.