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peeler
10-30-2009, 05:38 AM
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?

hj
10-30-2009, 05:40 AM
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.

Master Brian
10-30-2009, 03:00 PM
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!

Doherty Plumbing
10-30-2009, 10:09 PM
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!

Peter Griffin
10-31-2009, 06:15 AM
A dremel with a sharp wheel works also. Cut the nut,

hj
10-31-2009, 07:07 AM
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.