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Old 04-24-2008, 08:29 PM   #1
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Vessel sink doesn't drain completely

We made a vessel sink from a copper bowl by cutting a hole in the center and installing it with a pop-up drain. The sink does not have a lip around the hole like the other vessel sinks we've seen. Water stays in the bottom and it doen't drain completely. How can we get the last 1/4 inch to drain?


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Old 04-24-2008, 08:43 PM   #2
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You will need to peen a recess in the bottom so the top of the pop up will be lower than the bowl. I have never done it myself, but as a welder I can make this suggestion.
Copper is a rather soft and easy mailable metal. If you take a block of wood and create a negative image into the wood then the bowl can be set over this so you can peen the center down. You will however want to use a hard wood like oak, or hickory. I would use a piece about 4" x 4" as this will allow enough to sit the bowl onto. Also you may want to use a wooden hammer. That is, the face of the hammer is made of wood. This will take quite some time and may want to practice on a scrap piece of copper to start with.
Good luck.


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Old 04-24-2008, 08:54 PM   #3
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Thanks. We'll give it a try. Do we need to heat the copper before hammering?
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Old 04-24-2008, 11:35 PM   #4
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Nope, copper is very malleable and shouldn't need heating. It will probably take hundreds of hits, so work slow and deliberately and don't expect immediate results. It will take a lot of forming to stretch that metal out.
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