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  • Question on welding cast iron

    A guy dropped his old wood plane and it broke in half. The break is vertical on both sides. No chunks missing. If you fit together you can't tell it's broken. I need a simple way to try and fix this if I can. .I know I'll need to V groove it out . Can this be migged? I also have some brazing rods. I'm not going to put a lot into this. Just trying to save it as it. Suggestions. I really don't weld cast but once I did mig the cast power steering box on my old dodge van. It had a hairline crack and was seeping fluid. It's held.
    Nick
    Miller 252 Mig
    Miller Cricket XL
    Millermatic 150 Mig
    Miller Syncrowave 200 Tig
    2-O/A outfits
    Jet Lathe and Mill
    Jet 7x12 horz/vert band saw
    DeWalt Multi Cutter metal saw
    Century 50 Amp Plasma Cutter
    20 ton electric/hydraulic vertical press
    Propane Forge
    60" X 60" router/plasma table

    www.youtube.com/watch?v=jTu7wicVCmQ
    Vist my site: www.nixstuff.com
    and check out some of my ironwork and other stuff

  • #2
    I would really consider a high grade epoxy. If you can fit both pieces keyed perfectly you likely would have an undetectable repair.

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    • #3
      Originally posted by Cgotto6 View Post
      I would really consider a high grade epoxy. If you can fit both pieces keyed perfectly you likely would have an undetectable repair.
      I wonder if he wants to use this for static display. If so, even ca glue might work.
      Nick
      Miller 252 Mig
      Miller Cricket XL
      Millermatic 150 Mig
      Miller Syncrowave 200 Tig
      2-O/A outfits
      Jet Lathe and Mill
      Jet 7x12 horz/vert band saw
      DeWalt Multi Cutter metal saw
      Century 50 Amp Plasma Cutter
      20 ton electric/hydraulic vertical press
      Propane Forge
      60" X 60" router/plasma table

      www.youtube.com/watch?v=jTu7wicVCmQ
      Vist my site: www.nixstuff.com
      and check out some of my ironwork and other stuff

      Comment


      • #4
        Definetly something to find out. No reason to make things more complicated than they have to be

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        • #5
          I'd remove the blade, maybe the handle, vee it out and clamp it to something flat and rigid and braze it but I'm not into mig. Been a while Nick, nice to know your still alive and kicking.---Meltedmetal
          ---Meltedmetal

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          • #6
            I'm sure they make a nickle mig wire but its not as easy as mig welding it up, you need to do the prep, preheat, weld, peen and post heat to do a good repair.

            I just gave instructions about this a few weeks ago.

            Dont waste your time with epoxy if its a tool meant to use, epoxy is a great product under certain circumstances, this is just not one of them.

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            • #7
              Stainless

              I've welded cast finials on hand rails by pre-heating and using stainless welding rods. Peening it afterwards and they worked out. The finials were rather cheap but held up to the heat pretty good.

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              • #8
                I roark when welding on finales set them down tight and lift them up a little so the weld is not pre stressed

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                • #9
                  Question on welding cast iron

                  Ya, we talked a little about this a few weeks ago with someone that had a problem with an exhaust manifold. Wonder how that came out?

                  If you're positive it's cast iron and not cast steel, then TIG braze your handle doohickey. I prefer aluminum bronze, on AC with the balance around 70-80% EN and the freq around 100. That's how I'd most likely do it. The aluminum bronze flows nicely once you get the puddle going and it machines back down pretty easily too.

                  I would certainly agree that pre and post heat is a good idea. Peening the aluminum bronze I haven't found to be necessary.

                  Let us know how it goes.

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                  • #10
                    You can weld it, but you must 100% follow the proper procedure, if not ... you get more cracks than you started with...

                    You can get Ni MIG wire ... several years ago I looked into it and it was very very expensive and you could only get it in the big (11#) rolls ... I only needed a little bit, even the 2# rolls would have been overkill...

                    Brazing also works. So would JBWeld.

                    With JBWeld I'd worry about the fix not being strong enough; with brazing and welding, I'd worry about warping and distorting the plane body (brazing less so as it's not as hot). Pick your poison.

                    Frank

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                    • #11
                      Monte, good to see you back on the forum. Thought we had lost you. Ja
                      sigpic

                      Dynasty 200 DX
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                      • #12
                        Clean it up, clamp it, flux it and use silver solder.

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                        • #13
                          Originally posted by ja baudin View Post
                          Monte, good to see you back on the forum. Thought we had lost you. Ja
                          Thanks. I still visit every day just had nothing to say.
                          Nick
                          Miller 252 Mig
                          Miller Cricket XL
                          Millermatic 150 Mig
                          Miller Syncrowave 200 Tig
                          2-O/A outfits
                          Jet Lathe and Mill
                          Jet 7x12 horz/vert band saw
                          DeWalt Multi Cutter metal saw
                          Century 50 Amp Plasma Cutter
                          20 ton electric/hydraulic vertical press
                          Propane Forge
                          60" X 60" router/plasma table

                          www.youtube.com/watch?v=jTu7wicVCmQ
                          Vist my site: www.nixstuff.com
                          and check out some of my ironwork and other stuff

                          Comment


                          • #14
                            [Thanks to all that replied
                            Nick
                            Miller 252 Mig
                            Miller Cricket XL
                            Millermatic 150 Mig
                            Miller Syncrowave 200 Tig
                            2-O/A outfits
                            Jet Lathe and Mill
                            Jet 7x12 horz/vert band saw
                            DeWalt Multi Cutter metal saw
                            Century 50 Amp Plasma Cutter
                            20 ton electric/hydraulic vertical press
                            Propane Forge
                            60" X 60" router/plasma table

                            www.youtube.com/watch?v=jTu7wicVCmQ
                            Vist my site: www.nixstuff.com
                            and check out some of my ironwork and other stuff

                            Comment


                            • #15
                              Question on welding cast iron

                              Did you ever fix that thing?

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