Cutting 1mm PEI ?

Wondering what the best method is to cutting PEI. I am ordering some a little over 1mm thick and comes in 12" x 24" sheets and I need it to be 300mm x 300mm.

I don't know if a jigsaw is best or score and snap like acrylic works on PEI... It's a bit pricey and I just don't want to get cracks all over it.

Thanks

A straight edge and a razor knife will work. It takes many shallow cuts, not too much pressure, concentrate more on keeping the knife straight and moving smoothly against the edge. I find it works best when done on a harder, but scrunchable surface underneath, I have a piece of shelf board I keep around for cutting stuff on.

I used a dremel cutting disk, it made lots of dust but worked well. I'd imagine that a sharp fine blade in a jigsaw would be fine.