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Trellis Repair

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  • Trellis Repair

    A coworker asked me to repair his wife's plant trellis, which had two broken legs as shown below.

    1. Trellis with broken legs

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    When I inspected the broken weld on the leg, I noticed that the weld only penetrated about 1/3 of the way through the leg. In the following picture you can see the rusty cracked weld, which had minimal penetration.

    2. Rust on broken weld

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    First I removed the rust and paint from the legs in preparation for welding.

    3. Cleaned up legs

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    Next I cleaned up the joint as shown below.

    4. Cleaned up joint

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    I chose the oxyacetylene process for this application, because it is the most tolerant process for contamination. I cleaned as best that I could, but there was still some contamination in the joints that I couldn't easily get to. As you can see in the following picture the weld has a little contamination on the surface from the adjacent joints.

    5. Contamination on weld

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    Miller Thunderbolt
    Smith Oxyacetylene Torch
    Miller Dynasty 200DX
    Lincoln SP-250 MIG Welder
    Lincoln LE 31 MP
    Lincoln 210 MP
    Clausing/Colchester 15" Lathe
    16" DuAll Saw
    15" Drill Press
    7" x 9" Swivel Head Horizontal Band Saw
    20 Ton Arbor Press
    Bridgeport

  • #2
    To solve the problem, I just welded the adjacent joints to bubble out the impurities in them. In the following picture you can see that both the original and the adjacent welds are much cleaner. I also welded the remaining two legs, because they also had welds with minimal penetration as well.

    6. Cleaner weld

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    The last step was to paint the trellis.

    7. All Done

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    Sometimes the less used oxyacetylene process works best for an application like this.

    -Don
    Miller Thunderbolt
    Smith Oxyacetylene Torch
    Miller Dynasty 200DX
    Lincoln SP-250 MIG Welder
    Lincoln LE 31 MP
    Lincoln 210 MP
    Clausing/Colchester 15" Lathe
    16" DuAll Saw
    15" Drill Press
    7" x 9" Swivel Head Horizontal Band Saw
    20 Ton Arbor Press
    Bridgeport

    Comment


    • #3
      Nice fix
      Bob Wright

      Comment


      • #4
        Ya Don, nice fix; and as always, great documentation.

        Comment

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