I'm looking to build something tiny for knife making.
My idea is to weld an angle iron frame to hold everything together, and I'm going to use a few bricks and use a hole saw to drill a 2" hole down the center and stack them together.
My questions are
Is it better to leave the back end closed or is an open tunnel more effective?
Is it worth constructing my own burner for something that small or should I just drill a hole and stick a propane torch in?
If propane torch, is it worth investing in a swirl flame tip or is a pencil flame fine?
