New Cast Iron Tub Has Discolored Marks In Porcelain - Kitchen & Bath Remodeling - DIY Chatroom Home Improvement Forum

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Old 07-05-2010, 05:54 PM   #1
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New cast Iron tub has discolored marks in porcelain

I purchased a new cast iron tub. The tub was kept (outdoors) but completely protected in the crate and for a few months while the remodel job progressed. There was cardboard laying in the bottom of the tub for the few months it sat.

On install date, I noticed 4 thin, dark, scratch like marks in the white finish. These marks will not come out with soft scrub, comet, 2000 grade automotive sandpaper or anything else manufacturer suggested. There is no indent so it doesn't feel a scratch. The comment cardboard burn was used by the manufacturer so I thought they may have dealt with this, but now they deny using the term. Hmmm

The manufacturer claims they can't help because the 7 day window to send back a problem item has long passed. Does anyone have an idea on how to remove such a blemish without compromising the surface? Has anyone ever heard of cardboard burn?

Last edited by djfellows; 07-05-2010 at 05:57 PM. Reason: misspell
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Old 07-06-2010, 10:09 AM   #2
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Do you have any vinegar on hand? Fold up a paper towel, soak it in vinegar and put it over the marks keeping it as wet as possible as long as possible. Overnight is good.
This probably won't do anything, but if you have vinegar and paper towels in the house it's worth a try. I've had good luck with this method on other stains.
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