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going to have to cut some welds

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  • going to have to cut some welds

    I have a boat project that needs a new transom board...but the sheet aluminum that makes up the splash well and its supports have been welded to the transom and the stringers... trying to think of a way to cut them free, but still have the original dimensions , so they fit similarly when I need to weld it all back together.... Other wise I have to plan on a patch welded sheet or strip on the flat sheet areas... if I do that I am looking at riveting the patch sheet in place so there is a gap that represent the kerf of the "CUT".... so it is help in place as close as possible for MIG welding...which seems like a big task.... actually it all seems like a big task...on the stringer...the verticle support of the splash well... had an angled lip of about 3/4" width that was mig welded to the broad top of the stringer... the parts are not stitch welded...they welded the whole length mostly... could use some tips....if any are available


    dvice

  • #2
    You can try 41/2 cutting disk ,made for aluminum and non ferrous metal.use a respirator do not inhale aluminum dust.

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    • #3
      If you can physically get in there with any size cutting disk they do work well. Make sure you use wax to keep it from clogging. They make special wax for cutting but I have heard of people using candles also. I have also heard of people using wd40 to keep it from clogging.

      Yes it probably is a big task.
      MM250
      Trailblazer 250g
      22a feeder
      Lincoln ac/dc 225
      Victor O/A
      MM200 black face
      Whitney 30 ton hydraulic punch
      Lown 1/8x 36" power roller
      Arco roto-phase model M
      Vectrax 7x12 band saw
      Miller spectrum 875
      30a spoolgun w/wc-24
      Syncrowave 250
      RCCS-14

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      • #4
        I use just blocks of paraffin wax from the grocery store. Works pretty well but you have to apply it often...or at least I do.

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        • #5
          Yes you do have to apply it often, It goes on the wheel not the work.
          MM250
          Trailblazer 250g
          22a feeder
          Lincoln ac/dc 225
          Victor O/A
          MM200 black face
          Whitney 30 ton hydraulic punch
          Lown 1/8x 36" power roller
          Arco roto-phase model M
          Vectrax 7x12 band saw
          Miller spectrum 875
          30a spoolgun w/wc-24
          Syncrowave 250
          RCCS-14

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          • #6
            Originally posted by ryanjones2150 View Post
            I use just blocks of paraffin wax from the grocery store. Works pretty well but you have to apply it often...or at least I do.
            Toilet Wax Ring

            Yup.... not kidding... works well on bandsaw blades too...

            http://www.lowes.com/pd_330425-138-3...d=3956161&pl=1

            Works just as well as the DoAll lube sticks but much cheaper


            http://www.dgisupply.ca/product/RAM4000001/
            .

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            • #7
              I get my 4.5" cutting disks for alum from McMasterCarr and they don't clog so much. The nice thing is they are thinner than for steel discs and last a long time. The ones with the 5/8"x11 mount work best for me.
              Nothing welded, Nothing gained

              Miller Dynasty700DX
              3 ea. Miller Dynasty350DX
              Miller Dynasty200DX
              ThermalArc 400 GTSW
              MillerMatic350P
              MillerMatic200 with spoolgun
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              Linde UCC305 (sold 2011)
              Hypertherm 1250
              Hypertherm 800
              PlasmaCam CNC cutter
              Fadal Toolroom CNC Mill
              SiberHegner CNC Mill
              2 ea. Bridgeport
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              Haberle 18" Cold Saw
              Doringer 14" Cold Saw
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