the simple answer to the simple question is 'yes' but not everyone will do it because it is on the risky end of the scale - quote from

http://wiki.makespace.org/Equipment/...r#Can_I_cut_it

in the 'can I cut it?' section

Polypropylene: yes just. You must clean the bed. It will cut up to about 2mm. It's not a great quality cut, but just about doable. Fire risk.
like Gary said - talk directly to someone qualified to do it