The new forge gets fired up and when the temp within the muffler tube (a length of 4x2 box section steel with temperature probe in the top left corner) reaches 1560 degrees the blade is placed in till it reaches and soakes at that temp for a few minutes when it is quenhed in the oil tank with oil heated to 130degrees. You can se the handle of the oil heater (a short length of 2 1/2 inch dia steel welded to a rebar handle) in the oil tank which has been heated in the smaller forge.
