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I've seen photos somewhere on the web from a guy who made his forge by stacking four to six 4x4x8" firebricks into a chamber. Like Mike mentioned, you can reposition them as needed.

I'm far from...

No, thicker is, well, different. :)

It depends on the steel you're using, really. Different alloys have different requirements for how they should be quenched. Some, like 1080, 1095, and W1, need...

Mapp gas burns a lot hotter than propane. I don't know how much, though.

I think my two-brick forge with the JTH7 torch could get that file glowing in three or four minutes. If you line your...

You might want to get some veggie oil instead of engine oil. Engine oil is very thick and wouldn't work well on a lot of steels.

Josh

I'm guessing coal or charcoal? :)

Josh

Clay is what many charcoal or coal forges are made out of, but I don't know how well it would work for propane. For a small burner, you might not ever get the clay up to temperature. Keep in mind...

No, the pipe doesn't have a hole in it at all. The pipe is about 1" smaller than the chamber in the forge. It shelters the blade from direct contact with the corrosive flame, and it spreads the heat...

There are two types of firebrick--hard and soft. The hard stuff isn't good for forge building, as it dissipates heat rather than retaining it.

The soft firebricks are almost like styrofoam; you...

The one-brick forge really works. Believe it or not, that's what I've been forging my blades in so far. I have a real propane forge on order that should be arriving next week. Yippee! :)

A...