Kitchen sink scratches are NOT wear and tear, is it?
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How do I fix this hairline scratch in my ceramic (possibly porcelain?) sink basin? : r/fixit
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Any help? A porcelain sink horrible abused by previous owners. I've tried bleach and later BKF with a drill brush with little improvement. : r/CleaningTips
Remove Scratches from a Porcelain Sink
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Scratched up sink. Do I need to replace it or can something be done. : r/fixit
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How To Clean A Porcelain Sink (including the stains and scuff marks!) | Practically Functional | Clean porcelain sink, Porcelain sink, Porcelain bathroom sink
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How to Get Rid of Black Scratch Marks on White Porcelain Sink | Hometalk
How to remove scratches from brand new sink? More details in comments. : r/howto