FireIron

You could build a forge in stead of a kiln. I use an old gas can and cut a hole in the side and put a 20lb tank inside it. then stuffed fiberglass insulation in the half inch space between the two. On top of the insulation I put about an inch layer of fire sand I found by the train tracks. In side of that I put a large metal coffee can. Under the can I put fire sand. Around the can I put broken siding that is made out of paper and concrete. Each section has a hole it which I put a stainless tube in from a muffler which I attached a hair dryer to. Fill the coffee can about 50% full of coal and light. Once the fire has stopped smoking I turn on the hair dryer and the fire is very hot! It will melt sheet steel. Put a make shift lid and temps get very high. The sand and broken concrete act as vents for moister and I never had any explode. Although I have melted my coffee can. The coal or charcoal is far cheaper then LP or MAPP gas.