I'm trying to put a 45 degree angle on a piece of 3" xps insulation. The version of Enroute I have won't let me create 3D toolpaths without upgrading (an extra $3000).

How can I get that angle on that foam with the CNC machine? I

I've already done it with the table saw, and an electric hot knife. I'm trying to do it on the CNC even if it's time consuming and idiotic. Boss' orders.