Leo, they sell some bed liner materials like Linex at automotive paint stores. I did some for a friend and they turned out killer. I think it was like 40.00 for a QT and the gun it did like 10 bars and we still had 1/2 a qt left over.
the weight is not the issue -- i have melted probably more than he has -- over 1400#'s but is hard to keep from splattering everywhere.. glad you guys gota kick out of it..