I meant the inability to shoot with a broken index finger. She'd better start rigging up arm thingy like the departed Merle.
@gen What's the difference between a foam cutter and something like a utilty or carpet knife? Not trying to be a dick, I'm actually curious.
A foam cutter uses a hot wire. It looks like a band or powered scroll saw with a heated metal wire passing through a work table. You lie the foam on the table, normally press a foot pedal to heat/juice the wire, and trace your pattern through the foam by moving it to follow the pattern.