Use a tct woodworking router with a two flute 1/2" shank straight
bit.
10x 60t tct tcg saws work about as good as anything.
Forget Dupont they are jerks to deal with.
The stuff is quite abrasive because it's basically glass filled so you
might not want it near your machine tools

to figure sfpm figure a 1/2" router is turning 20,000 rpm