Oxy-Acetylene welding questions - Page 3
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  1. #51
    Join Date
    Nov 2012
    Posts
    27

    Re: Oxy-Acetylene welding questions

    I have received the Kent White DVD on autobody steel patch panels.

    He shows how he welds thin 20-gauge and it's pretty straight forward. I just need to practice feeling it out, but I'm getting good welds. He uses RG60 1/16 rod, I'm using RG45 1/16.

    He's also using an old victor J-40 with a #000 tip, which is smaller than the aw201 tip but not by too much. Looks like a nice torch to hold by the torch valves and adjust on the fly.

  2. #52
    Join Date
    Jan 2010
    Location
    Northwest Missouri
    Posts
    1,154

    Re: Oxy-Acetylene welding questions

    I’m surprised Kent is using a Victor J-40 since he sells MECO Midgets. I bought all my replacement tips for both of mine from Kent and used to discuss gas welding with him back when we both were contributors to the now defunct MSA group. Oh well, maybe he is mellowing in his golden years. I doubt it, but all things are possible.

    As for. The RG 45 vs. RG-60? For our purposes either is acceptable. I prefer the RG-45 due to its more ductile nature for metal finishing. RG-60 will finish as will ER-70 Sx, you just have to work it a bit harder. Since you are prone to “plastic surgery” I doubt if you will ever know the difference.
    Roger
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  3. #53
    Join Date
    Nov 2012
    Posts
    27

    Re: Oxy-Acetylene welding questions

    Quote Originally Posted by Rog02 View Post
    I’m surprised Kent is using a Victor J-40 since he sells MECO Midgets. I bought all my replacement tips for both of mine from Kent and used to discuss gas welding with him back when we both were contributors to the now defunct MSA group. Oh well, maybe he is mellowing in his golden years. I doubt it, but all things are possible.

    As for. The RG 45 vs. RG-60? For our purposes either is acceptable. I prefer the RG-45 due to its more ductile nature for metal finishing. RG-60 will finish as will ER-70 Sx, you just have to work it a bit harder. Since you are prone to “plastic surgery” I doubt if you will ever know the difference.
    The recording is old. Maybe that's what he was using in the shop at the time. He has quite a collection, he has a picture of all the torches in his collection posted up on his site. He was using it for other useful things besides welding, using a #1 tip. I am sure the meco midgets are better, with more tip sizes available.

  4. #54
    Join Date
    Sep 2008
    Posts
    188

    Re: Oxy-Acetylene welding questions

    In his other videos Kent uses the Meco Midget so that video was done before he switched over to the Midget and as I recall he makes some comments as to the why in the Gas Welding aluminum videos. Big reason is the light weight of the Midget when there are long welds that need to be made.

  5. #55
    Join Date
    Jan 2008
    Location
    Fond du Lac, Wi
    Posts
    1,029

    Re: Oxy-Acetylene welding questions

    The J-40 is a fun little torch, however the valves are right where you hold the torch and bumping the setting is not an infrequent event.

  6. #56
    Join Date
    Nov 2012
    Posts
    27

    Re: Oxy-Acetylene welding questions

    Yeah he was holding the torch by the valves and seemed like he was making minor adjustments when he was using it to cut out spot weld sections (with a welding tip) as he was going. That's kind of what I liked about it.

    He also used it to easily blow out really thin sections of metal where you couldn't really tell it was too thin to weld new sheet on to. Then you can see where the decent metal thickness starts. The torch is so versatile! He used it to help bend and shrink with a hammer as well, makes the job much easier.

  7. #57
    Join Date
    Jan 2008
    Location
    Fond du Lac, Wi
    Posts
    1,029

    Re: Oxy-Acetylene welding questions

    Oh yeah the technique of melting back the edge of corroded sheet steel to build up some thickness before fitting in a new piece. Yeah the torch is really the go to tool for working on projects like that. Usually on rusty sheet give yourself about a 1x feather for a little fluxing action to help deal with all the surface oxides.

  8. #58
    Join Date
    Nov 2012
    Posts
    27

    Re: Oxy-Acetylene welding questions

    Quote Originally Posted by makoman1860 View Post
    Usually on rusty sheet give yourself about a 1x feather for a little fluxing action to help deal with all the surface oxides.
    Good tip, thank you. That's for the melting technique, but would you also have a bit of a feather for welding as well on old sheet or always keep that strictly neutral?
    Last edited by thrashmetal7; 10-23-2018 at 04:29 PM.

  9. #59
    Join Date
    May 2015
    Location
    Barre Town, VT
    Posts
    871

    Re: Oxy-Acetylene welding questions

    I just looked up the Victor J-40 that looks like a neat little torch. I Will definitely keep my eyes peeled for one of those in the future.
    My "collection":

    Homemade Stick Welder
    Victor O/A Torch
    AC 225
    Ideal Arc 250

    HF 90 Amp Flux Core
    HF Mig 170
    Solar 2020 Plasma Cutter
    Power i-Mig 140E
    Harris O/A torch
    HF Dual Mig 131
    140ST
    Alpha Tig 200x

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