There are some here who use a kiln but not me I HT in my forge. I suggest you start a new thread about Kiln HTI welded together a 4 x4 a coal forge coal and use a 165lb forged anvil. Have rebuilt a LG 25lb power hammer. Awaiting delivery of one burner Chili forge. Who has experience with using pottery kilns for heat treat? I have an excellent Duncan kiln on the cheap and would like to wire in a digital controller. Does anyone have experience with this kind of project?