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O/A Welding Tip?

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  • BigMike782
    replied
    If you go buy rod make sure you get RG45 or RG60 and not 70S2.

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  • danlb
    replied
    Originally posted by itsjames2011 View Post
    Hello again everybody, another question from the new guy....

    On a daily basis I use my Oxy Acetylene torch for cutting and heating things. I've decided I would like to try my hand at gas welding. Can anybody tell me what size tip and welding rod would be appropriate for exhaust pipe work? I have a pile of scrap and want to see if I can't get the hang of it. Not doing any stainless steel at this point.

    James
    The advice given here is good. You should be able to find a cross reference chart for your torch. Given the thickness of the metal, it will tell you what tip size you should use as well as settings for fuel and oxy. For instance, this chart is used when welding using a Victor torch.

    Dan

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  • QSIMDO
    replied
    A good tip ( no pun ) for gas welding is use a tip that will heat your material to welding temp in 5 to 7 seconds.
    If it's not heated by then you're too small, assuming correct regulator and torch settings.

    Another excellent way to learn temp and puddle control is to first deliberately over heat and hole some material you'll be working on.
    Get to know what that material looks and behaves like when it melts through then practice to control that.
    Do that with a variety of materials and sizes and you'll be a wiz in no time.

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  • bob308
    replied
    the old coat hanger is too big. I use the left over wire from the mig when it runs out. I also have a roll of .045 mig wire that got wet and you can not run through the liner. I had a roll from a old wire tie bailer that worked good.. a friend of mine used the tie wires from steel bars.

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  • dave5605
    replied
    Do a google search for welding tip sizes and you will find all kinds of info.

    Here are some decent charts
    http://dennisalbert.com/Welding/WeldingTipGuide.htm

    Leave a comment:


  • Seastar
    replied
    As Mark says, OA welding is relaxing. I love to OA weld. I use a wire feed welder when I want to finish quickly but much prefer OA. TIG and stick are OK but I love OA.
    I learned to OA in a high school summer job in a body shop in the late 1940s.
    Did I say I love to OA weld.
    Bill
    PS: I would vote for a #1 tip for exhaust pipe welding.
    Last edited by Seastar; 06-09-2017, 09:06 AM.

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  • boslab
    replied
    I seem to think I use a no 5 for some reason, you don't want a tiny nozzle to learn, a little bit bigger so you can learn to form a puddle and move it, get some 1/8 plate and learn to fuse it, no filler 90 degree corner, bring them together and tack, then run a weld along by just fusing, the edges will melt then pop together as surface tension fails, assuming they touch!.
    Exhaust (new) same thing, butt together and fuse, no filler, suprising it works, that's how I learned when I was a kid, teaches you how to set pressures and torch/ puddle manipulation.
    When you start with filler use tig rods the copper coat helps as its a deoxidant, neutral flame, blue cone feather on the tip.
    Loads of videos online
    Try not to jump when it pops!, it will if you dig the torch in, when you get it it the most relaxing welding process, you go into a trance making tiny circles with the flame
    Mark

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  • fixerdave
    replied
    Originally posted by randy_m View Post
    If you want to practice use steel coat hanger straightened out.


    Sent from my iPhone using Tapatalk
    I haven't seen a steel coat hanger in years... used up the last of my "stock" in the closet a long time ago. I mean, if you actually wanted a metal coat hanger these days, you'd probably have to go buy some welding rod and bend it up yourself Either that, or an antique store. Yeah, not all progress is a good thing, at least for an HSMer.

    David...

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  • randy_m
    replied
    If you want to practice use steel coat hanger straightened out.


    Sent from my iPhone using Tapatalk

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  • ahidley
    replied
    3/32

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  • bob308
    replied
    I use a number 1. I weld a lot of exhaust pipe and body panels.

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  • itsjames2011
    started a topic O/A Welding Tip?

    O/A Welding Tip?

    Hello again everybody, another question from the new guy....

    On a daily basis I use my Oxy Acetylene torch for cutting and heating things. I've decided I would like to try my hand at gas welding. Can anybody tell me what size tip and welding rod would be appropriate for exhaust pipe work? I have a pile of scrap and want to see if I can't get the hang of it. Not doing any stainless steel at this point.

    James
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