Last ditch perhaps, but here goes - - - -
Embed the sink in a good bead of silicon, get it squared with the counter
edges and place a cement block or two in the basin(s) and let it sit for a
day or two.
Don't laugh at me - I've done it in a workshop counter three years ago and
it's still hanging in there.
Good 'nothing to lose' workaround, but rather than scratch and bend the
basins with concrete block, I'd cut a scrap of plywood to fit over the
top, resting on the edge flanges, and stack the weights on that. That
will provide more even pressure, straight down on the silicone sealant.
A ring of something like that is how previous owner mounted the vanity
sink in this place, and it held till I had to apply excessive torque
changing out the trap. That was at least ten years.
That solution is like the old saying: "You can't get there from here. You
have to start from somewhere else."
Your idea is absolutely brilliant! Like Ben Franklin's invention of the
bifocal glasses - incredibly obvious, but no one thought of it before.
Thinking outside the box and imminently more practical than "Can you fashion
some sort of lathe?" I don't think I'm being premature in saying "Thank
on 2/3/2009 6:01 PM (ET) HeyBub wrote the following:
I can't imagine any type of clamp that would work with what you have
described. Perhaps that sink missed a step in manufacturing and got
though inspection? Maybe that's why it was on clearance. How about a
bead of epoxy putty under the sink rim?.
You 100% sure about that Bub? All the channels I have ever seen have a
ridge in them or are shaped so that the clip will catch when it is
tightened. That ridge or shape may be almost indiscernible but I'm betting
it is there.
If you know the manufacturer of the sink they would have it. That's the
best bet as the clips vary in size and design with manufacturer. If you
don't, Home Depot, Ace, etc. have generic clips. I'm sure plumbing supply
stores do too. Some different styles...
One thing about the generics...not long ago I was putting in a used SS sink
in my shop and had to get clips at HD. Well, they were really too short for
3/4 ply so I had to bevel the bottom edges of the opening so they would bear
on the wood. They were like these from Ace but the tab was fixed rather
than sliding. Wish I'd seen them, I wouldn't have had to bevel.
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