removing rusty drain from antique sink

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by peeler, Oct 30, 2009.

  1. peeler

    peeler New Member

    Messages:
    3
    Location:
    Kannapolis, NC
    I'm restoring a 1923 Kohler pedestal cast iron sink,, and having a bit of trouble
    removing the drain pipe. There is rust between the pipe and sink body. I've been hitting it with spray oil periodically, tapping it with a hammer. I'm assuming the visible flange ring is attached to it permanently but not sure...
    any ideas? would a little heat be effective, safe?
  2. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    27,298
    Location:
    Cave Creek, Arizona
    drain

    Cut it off with a hacksaw, or SawZall. Heat could cause the enamel to chip off. The exposed piece is part of the drain, not the sink.
  3. Master Brian

    Master Brian DIY Senior Member

    Messages:
    368
    Location:
    Kansas
    I'd be worried the sawsall would vibrate and chip the enamel as well. Any chance you have a dremil or a diegrinder/cutter? If you try the sawsall, use a good sharp blade....

    A little heat would probably get it off, but like HJ said, it could pop the enamel. I think I used a diegrinder to cut the one off my antique clawfoot tub!
  4. Doherty Plumbing

    Doherty Plumbing Journeyman & Gas Fitter

    Messages:
    810
    Location:
    Penticton, BC
    If you have the sink out just simply cut the drain off with a hacksaw as close to the underside of the sink as you can. Make sure you cut/pry off the nut holding the drain in place.

    Good luck!
  5. nhmaster

    nhmaster Master Plumber

    Messages:
    3,189
    Location:
    S. Maine
    A dremel with a sharp wheel works also. Cut the nut,
  6. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    27,298
    Location:
    Cave Creek, Arizona
    saw

    There is NO vibration from a SawZall that would damage the enamel. WE do it all the time. But you have to cut it off under the sink, not on top.
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