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Thread: Seattle area: cast iron tub repair

  1. #1
    DIY Senior Member DavidTu's Avatar
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    Default Seattle area: cast iron tub repair

    We have a claw foot cast iron tub that has feet attached by bolt to the bottom. Each bolt has a wedge-shaped head that each sit in a pyramid-shaped channel. One of the pyramid channels is broken on one side. We have tried to repair with JB Weld epoxy but it is not holding. While concerned about damaging porcelain/enamel from heating it, it seems like rebuilding the channel is the only answer and I presume this would be done via welding.

    So, looking for advice on how to repair this and particularly if you are in Seattle and can recommend someone, that'd be perfect.

    Thanks.

  2. #2
    Moderator & Master Plumber hj's Avatar
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    Default repair

    It is almost impossible to "weld" cast iron, and would be completely impossible to do it to your tub, because the entire casting has to be heated which would destroy the porcelain. Brazing would work, but might still "overheat" the porcelain in that area and cause it to "pop off".
    Licensed residential and commercial plumber

  3. #3
    Forum Admin, Expert Plumber Terry's Avatar
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    Default

    You may get by with a decorative support elsewhere under the tub to take the weight off.

    Like hj mentions, there is no welding of cast. It's kind of a junk metal.

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