A.Tony Pelcher, a solid-surface fabricator, responds: Examine the sink closely to see whether it is scratched or merely dull. A sink that is dull but not scratched can be restored with Soft Scrub (a mildly abrasive kitchen cleaner available in grocery stores) and a Scotch-Brite pad from 3M.
If you can feel any scratches with your fingernail, the first step is to sand out the scratches with wet-and-dry sandpaper, available at any auto parts store. It shouldn’t be necessary to use anything coarser than 320-grit. Keep the sink wet while you’re sanding. After sanding out the scratches, finish with 400-grit wet-and-dry sandpaper,...
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