Dave,
My good wife uses a rotary cutter to cut material when she is making a quilt. Basically it is an extremely sharp wheel with a plastic handle on it. Anything you push the wheel over it cuts.
I bought one ($45 AUD) and keep it in my workshop for cutting glass and uni carbon. If you need to cut kevlar you can't use it. You can only use kevlar shears or special scissors.
Regards,
Phill

I know that the voices in my head aint real,
but they have some pretty good ideas.
There is no such thing as a quick fix and I've never had free lunch!