Using a Shapeoko 5 Pro (2x4) and a Bits & Bits Foam Bit I can cut 2 inch foam...
The Faom I am using is called CROSSEDLINKED POLYETHYLENE (XLPE) 2LB and comes in many colors

BIT FOUND HERE: https://bitsbits.com/product/430st25...
Spindle Speed: 1416,000RPM
Feed Rate: 120180IPM
Depth per cut: .250″ – 0.500″

SUPER GLUE USED: https://amzn.to/4f29zbJ

ACTIVATOR USED: https://amzn.to/3zZGO0j

FOAM FOUND HERE:
https://www.foambymail.com/product/cr...