the melted mass.
You will need: Materials _Thick tin foil _Glass fiber roofing insulation _Crushed charcoal (for best results use perforated charcoal from an old water filter) _One scrap aluminum L section, approx. 2 x 2 x 15in _Two steel or stone sheets (for best results use polished stone scraps from kitchen countertops, sink cutouts or leftover floor tiles) _Wax for mold release (beeswax or automobile polish) _Three long screws, approx. 3in _One or two small nuts and bolts Tools _Camping stove _Food tin _Steel kitchen pan with lid _Cooking thermometer _Metal scraper _Hacksaw _Drill and metal bits _Screwdriver