Extruded Polystyrene Rigid Insulation - Free Jun 26, 2019 20:13:27 GMT -4 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by rob on Jun 26, 2019 20:13:27 GMT -4 I have a sheet of Extruded Polystyrene Rigid Insulation that I'm not using if anyone wants it, it's free. Just have to pick it up.Good for hot wire cutting to make foam planes