Anyone in the local Victoria area have a carving knife they've used for soft foam. I've used scissors but it's kind of ragged.
I have done that. Works great but does leave a clean-up.I redid the foam on my quad seat and I used a small angle grinder and flap wheel. If you do, go light and gentle, it will eat foam like a piranha.
I have done that. Works great but does leave a clean-up.