hi, I´m begining a small bussiness, I´m making crown molding for arquitectural decoration , I´m using xps foam 16 kg/m3, the problem is that the cuts are not straight, the profile and surface are very good, but some cuts are not. I´m using cnc at 20 in/min, and the cut lenght is 4 ft, this machine is home built, I have a foamlinx 3920foam cutter, but the problem is the same.
I think that the problem is the internal stress of the foam, but I´m not sure and I don´t know what can I do, could some one help me please?. thankyou