Proofgrade cuts just fine, no issues last time i cut. However, I set the material height as .12 and .15 to see if it makes a difference. The only successful cut I have so far is .12 - Full power, 3 pass, 100 speed. I had tried to set .15 - full power - 150 - 2 pass and got a scorch mark on the back of the wood but, it did not cut all the way through and the flame was rather large.
Well, I have a set of calipers but they are battery powered and I have to get a new battery.
attached is a photo of all my attempts, masking tape should not make a difference in cutting no? It is the same thickness as proofgrade walnut, i tried both the walnut settings and hardwood cherry settings and it did not cut through either.