Thread: Kiln/Furnace for knife making heat treatment, who built one?

Originally Posted by diana2

[FONT=arial]Hi mimms do you have a picture or two?

As a matter of fact, I do. These are all old pics, it's slightly more refined now, with less to trip over.

Pic 1 Is the shell, an old oil drum, top cut off, tuyere cut into the side down low and a drain-former in the middle bottom.
Pic 2 is half way through a melt with the burner off, you can see the crucible/melt inside
Pic 3 is after I had melted some cast iron, way, way hot, looks like I actually melted the sand out of the walls/lining and made glass.
Pic 4 is what happens when you over fuel it, and that was my old undersized lid. Can't remember why I drew on that pic.
Pic 5 is the refractory ingredients. Grog (crushed firebrick), sand, bentonite, cement, and perlite.
Pic 6 is something aluminium I was casting in greensand and a couple of muffin-tin ingots

Sorry for the huge photos... I'd think forum software should sort that out, but err..