How to Make a small Gas Furnace

Step 5 Fire it Up

Once the refractory's ready to be used, use it. As with the coal forge i posted, i recommend that you fire it up without doind any work at least once, just to get a feel for it. Place the torch into the pipe making sure that the burner head of the torch doesn't protrude into the main area of the furnace. For god's sake don't obstruct the airholes. Also, don't even USE your torch if it's in anything other than perfect working order. To light the torch in the furnace, turn on the gas slowly while holding a burning stick, or a bit of rolled up paper with the end on fire in front of the burner. Once it catches, wait a minute or two till it gets up to working tempertaure.