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convert old mig to wire feeder

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  • convert old mig to wire feeder

    Can i conver a an old mig to a wire feeder?
    Here are my thoghts get a mig suchas a hobart handler(or similerly sized mig from ther copany) remove the coils and transformer and anything else that converts the power from the wall to welding curent. Then conect it to a constant voltage output (engine drive set for CV).
    This is an automotive discussion forum that has some great infromation

    www.autobodytoolmart.com/shoptalk

  • #2
    I bet it could be done but I question what benefit you will see. I would look for an older wire feed to match with the machine you have now. I don't think you will save any money by hacking a small MIG unless you have it on hand and a standalone feeder will likely be better made and last longer than the components in a HH wire feed.

    What CV machine do you have?
    Miller Shopmaster 300 CC/CV AC/DC
    S22A Wirefeed
    HF251D1 High Frequency Box
    Coolmate 3
    Miller Spectrum 625 Xtreme


    Lincoln Idealarc 250 DC CC/CV
    LN-7 Wirefeed

    Comment


    • #3
      Another thing to consider is that even if you did modify a HH you would need to start with a machine the same size as the power source you'll be using. You can't use a HH130 wire feed on a 300A engine driven welder as it can't handle the current.
      Miller Shopmaster 300 CC/CV AC/DC
      S22A Wirefeed
      HF251D1 High Frequency Box
      Coolmate 3
      Miller Spectrum 625 Xtreme


      Lincoln Idealarc 250 DC CC/CV
      LN-7 Wirefeed

      Comment


      • #4
        Originally posted by Zebu Fellenz View Post
        You can't use a HH130 wire feed on a 300A engine driven welder as it can't handle the current.
        Of course you can. But you'll have to know the limitations or you'll fry the little feeder.
        Nothing wrong with using a small gun on a large machine for tight space / low power jobs. Or do you think that all those small, but high quality guns are only made for upgrading Harbor Freight welders? Nevertheless, a real feeder unit is way stronger and you would usually have a quick disconnect for different guns.
        Steffen
        Krefeld, Germany

        Comment


        • #5
          You need a drive mechanism intended for constant current to run it off a stick power supply like your mobile rig. Just gutting a mig machine is only part of the problem. The wire speed rate will be determined by the arc length, and without a robot welding for you, that length will vary with your every move.

          Keep an eye on CL and ebay. I just sold a 24' Push-Pull Hobart suitcase feeder with both CC and CV capabilities (perfect for what you want) - it went for $260 delivered. I bought a brand new Airco feeder for $130 delivered about 6 months ago. The deals are out there, but you need to be looking for them.
          Syncrowave 250DX
          Invison 354MP
          XR Control and 30A

          Airco MED20 feeder
          Thermal Dynamics Cutmaster 81
          Smith O/A rig
          And more machinery than you can shake a 7018 rod at

          Comment


          • #6
            Can I ask really strange and obscurer questions.

            Can I remove the engine from my car and replace it with a steam plant and electric motors and then put it in the garden.

            If I walk to work and you eat pie will the Jets win the World Series.

            Yes Mr. Melter you can as long as it is legal in your area you can do anything you wish.

            Good luck

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            • #7
              Do these engine drives not have AUX power?
              Ed Conley
              http://www.screamingbroccoli.net/
              MM252
              MM211
              Passport Plus w/Spool Gun
              TA185
              Miller 125c Plasma 120v
              O/A set
              SO 2020 Bender
              You can call me Bacchus

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              • #8
                I think the issue is that he's already got the welding power supply, and just wants to add GMAW capability to it rather than having to buy another full welder just to use his engine drive as a gen set.

                The problem is that a decent suitcase CV/CC feeder is going to cost as much as a whole MM212 new. Used they fetch a good premium as well, but if there's an oddball out there, you can do pretty good.
                Syncrowave 250DX
                Invison 354MP
                XR Control and 30A

                Airco MED20 feeder
                Thermal Dynamics Cutmaster 81
                Smith O/A rig
                And more machinery than you can shake a 7018 rod at

                Comment


                • #9
                  Originally posted by Fishy Jim View Post
                  You need a drive mechanism intended for constant current to run it off a stick power supply like your mobile rig. .


                  He just said an engine drive set to cv
                  So no, he doesn't need a feeder intended for cc.

                  JTMcC.
                  Some days you eat the bear. And some days the bear eats you.

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                  • #10
                    And, since he has CV capabilities, he can buy almost any old wire feed on Ebay and cable it up and run it.
                    I have two old Miller 30A feeders that still push wire.
                    Jeff

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