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Old 09-27-2015, 06:46 PM   #16
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the grinder marks are an easy "they are somebody's fault"

the cracks; maybe from lack of support but where they are they could also be due to excessive shrinkage in the sink when getting baked. They are in the thickest part of the sink so it would be more susceptible to excessive shrinking in that area.

or it could be a combination of shrinkage and improper handling.

I would be concerned the cracks would migrate through to the inside though, even if now supported properly.


Now im trying to figure out where the cracks are. I am trying to figure out how a lack of support could cause them, especially since a sink generally does not require a support other than the flange on the counter top.
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Old 09-27-2015, 11:02 PM   #17
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what the heck happened with the grinder? I cannot imagine any valid excuse for the grinder marks so regardless of the cracks, (in case they do claim they are only cosmetic but they aren't since food can lodge in there and be a source for bacteria growth) somebody screwed up the sink and needs to be whipping out the wallet.
After the sink was installed incorrectly the first time, they had to remove the countertop to cut a new top and correctly build a support structure. The grinder was used to break the first countertop lose from the sink.
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Old 09-27-2015, 11:07 PM   #18
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That is no way Cosmetic. That is pure stupidity of the contractors. Who is doing this job if you do not mind? Is it through Home Depot, or local Kitchen design place?
Not home depot or lowes, but a small local kitchen and bath design place, the name of which I don't think I should broadcast.
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Old 09-27-2015, 11:11 PM   #19
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I just noticed something where i may be mistaken:

are those cracks on the outside? If so, my prior statements would not apply UNLESS they have continued through which I would be very concerned about happening. If they are on the outside, it would likely be more likely the manufacturer exchanges it.
The picture of the cracks depicts what you see if you slide your head under the sink and look up. The picture of the grind marks was taken at the stone fabricator's after the first aborted installation and before the second countertop was cut.
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Old 09-27-2015, 11:28 PM   #20
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The one set of cracks where the divider is, looks like it is on the bottom of the sink. If I had to guess, it was unsupported and someone put a lot of weight on that area.

Exactly. The idiot countertop people were installing it completely wrong so that it was supported by just some ledger boards under the left and right upper rims of the sink. After I called the direct contractor, there was some attempt to support the sink from below that a week later all agreed was FUBAR. That is when the first new countertop was removed.

The grinder marks would be around the lip. That sink is FUBAR, and someone owes the OP some money. If I had to make a fair guess on this. Low cost Sub's through a company that does not care about the quality of their work.

It looks like that is the case.

Reminds me of some of the jobs you see on "Catch a Contractor" on Spike TV.

I was at least smart enough to insist on a building permit. So far I have had to go to the city twice and it looks like its time to give the inspector another call. This may not be something the city can do anything about, but as is I have been thinking of calling the city out about a bad junction box splice.
The thread about the problems with the splice is at http://www.diychatroom.com/f18/junct...lation-316001/
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Old 09-28-2015, 01:00 AM   #21
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the grinder marks are an easy "they are somebody's fault"

the cracks; maybe from lack of support but where they are they could also be due to excessive shrinkage in the sink when getting baked. They are in the thickest part of the sink so it would be more susceptible to excessive shrinking in that area.

The cracks are on the underneath of the bottom of the smaller and shallower right basin and they are located where that basin shares a common wall with the larger and deeper left basin. Basically near the middle of the underside of the sink.

or it could be a combination of shrinkage and improper handling.

I would be concerned the cracks would migrate through to the inside though, even if now supported properly.

I believe they are now better supported, but I am not sure they yet are supported properly.

Now im trying to figure out where the cracks are. I am trying to figure out how a lack of support could cause them, especially since a sink generally does not require a support other than the flange on the counter top.

This is a heavy clay sink that is not designed to be hung from the flange. The manufacturer provides instructions for building a little 2X4 bench on which the sink is placed. After it is placed the counter top is glued in place. The written instructions were provided to both my contractor and the involved subcontractors.
My comments in bold.
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