> What do you do with the extremely hot gasses that must be vented? When > you start mixing oxygen + fuel in a tightly closed box ... The hot gas venting at the seams under pressure would serve as a deterrent to anyone trying to open the box conventionally. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist