dgr

I do believe I confused the burners I was looking at on AliExpress with the one I pointed you towards. I blame old age. You're right. It isn't copper but it appears to be the same diameter as a mig tip in the photo attached The forge I was looking at with the relevant picture is no longer showing in a search on Amazon. I apologize for the wild goose chase. I wasn't really focused on the forge but the gas tube did catch my eye. The forge and burner is, how did you put it, a garage heater and a good base of parts. If their dimensions are accurate, it could fit another layer of inswool and a refractory coating and end up with about 300 cubic inches. Throw in a decent burner and it might heat some metal.

Mike, if you get bored, look at an e-cowlboy forge on the jungle. Not because it's anything spectacular but look at the burner. More specifically, the gas jet mount. The pictures aren't great but it looks like they're using a mig tip threaded into a copper pipe that is then threaded into an off the shelf plumbing fitting for the flare connection. What caught my eye is the copper pipe appears to be the same OD as the mig tip. I thought maybe they swaged or soldered it but one of the reviews shows a bunch of swarf that was pulled out of it and the reviewer said he unthreaded both ends to get the swarf out.. My curiosity said, how'd they get a 1/4 diameter mig tip threaded into a 1/4 OD copper pipe? Has anyone looked at the cast iron wasp waisted burners on AliExpress? They're pictures give some ideas. One of them showed compression ferrules on a 6mm gas tube. A 1/4 comoression x NPT might be a slick way to mount an adjustable gas tube. Last thing for Mike's new book. I've seen it mentioned in your writing that mufflers are zinc coated. I installed a few mufflers in my younger days and never saw the telltale yellow soot of zinc when welding them. I believe non-stainless modern exhaust components are aluminized and not zinc coated steel. Cheers

Frosty, I've seen that picture in a couple of posts. I really like the look of that forge. It appears that the Tee is a 1/2 rise X 1/2 run. Is that correct?