hello, im new to this forum but i have been a major hobbiest with blacksmithing, when i get time fromn work, well i usually use coal or charcoal, then i tried propane, propane was awsome but expensive. so i was looking around a saw this link Waste-Oil Forge and Foundry so i decide to give it a try, i had a reil burner that i made and turfed it. then made this one, gave it a test fire and man was i surprized. it actually worked, and it worked good, it is so stupidly simple and it cost me like $20 canadian to make it. i used black iron of course. rigged up a blower from a old vacuum like this guy did, a voola. this idea is awsome, it works as a forge burner, and it works good. or course i have a more fitting forge casing, a old air peg tank, with a 2inch thick layer of ceramic durablanket, i bought two rolls off ebay that were 1/4 inch thick, each roll was 12'' by 24'' by 25 feet. so 50 feet of this stuff for a grand total off 120 dollar booyah, well instead of plistix or stuff like that i went cheap, i used the fire cement clay, it works real good, look cruddy but it work awsome, and it alot cheap to repair. well in general, i love the waste oild burner and i plan on using it for a long time, i spend 6mins to get it up to running temp and a forge for hours. and it helps i have over 80gallons of used motor oil that i filter before burning it. i have no problem with smoke or fumes, butt i run a ventalation fan anyways, well thought id just tell you about this link. You GOT to check it out.