Brass fittings on burner question

[Jason brooks]

Hi,

I am making a modified side-arm burner like that on Larry Zoeller's page. I got the schedule 80 black 1/8 inch pipe to put the tweco tip into, but the inner diameter is too big to tap.

I found some brass adapters that have enough meat on them to tap: is there anything wrong with using brass on the gas injection part? Does it get hot enough to make any zinc outgassing an issue?

Thanks for your time...

--jason

[Larry L]

I would think its fine... But dont have any direct experience

[J Wilson]

The flowing gas will keep it cool. I use brass fittings on my burner. Note that I always remove my burner as soon as I shut off the gas so it doesn't act as a chimney while the forge cools.

[Lynn Gledhill]

Hey check out Steve H's micro forge burner in the forum under the forge fire. I built one of these burners and it is super tunable, from blast furnace to a whisper. It is the best burner I've ever seen. As far as brass or black pipe or galvanized, for a burner it doesn't really matter. Build one like Steve's and you don't need to worry 'bout any of that stuff.

[Jason brooks]

Thanks Lynn, but I am already well underway on building this thing. But, I may build it in the future. Thanks for the pointer!

--jason

[Bert]

[QUOTE=Jason brooks;11338]Hi,

I am making a modified side-arm burner like that on Larry Zoeller's page. I got the schedule 80 black 1/8 inch pipe to put the tweco tip into, but the inner diameter is too big to tap.


I have used 1/8" schedule 80 brass pipe and the I.D. is just right for tapping the
1/4"-28 tpi thread for the mig tip. You may have a 1/8" sch 40 pipe. At any rate, you can silver solder a 1/4"-28 nut on the end of the pipe, then grind it to the pipe diameter.

[Jason brooks]

Hi,

You might be right about me having a schedule 40 pipe. However, I tried all sorts of pipes labeled schedule 80 at ace hardware. All of them, brass, copper, galvanized, etc. had too big a diameter.

It's no big deal anymore: I pretty much did exactly what you suggested. I took a 1/8 inch nipple, cut it in half, drilled an tapped it, then connected it to the pipe with silverbraize via a F-F brass adapter. I then chucked it into a drill press and filed it. There's a picture in my album here: https://www.facebook.com/media/set/?...027.1001651572.

Thanks for the reply!

I have used 1/8" schedule 80 brass pipe and the I.D. is just right for tapping the
1/4"-28 tpi thread for the mig tip. You may have a 1/8" sch 40 pipe. At any rate, you can silver solder a 1/4"-28 nut on the end of the pipe, then grind it to the pipe diameter.