Originally Posted by raiffnuke
+1 on using tape to mark things....unless you are using silnylon! Tape won't stick at all to that! (trust me on this
Try laying it out on a hard floor. Tape all the way across, sticking the tape to the floor on each side. The tape will grip to the silnylon enough to allow cutting without slip. Then slide your cutting mat underneath and cut it with a rotary knife. Works great.