Sanding Hacks

Distinguish an etched finish from residue, then judge the surrounding reflection before turning a small ring into a larger polishing patch.

Acidic spills—like lemon juice, vinegar, or bathroom cleaners—can etch marble surfaces, leaving dull white spots. Restoring shine doesn’t require replacing the slab: with careful sanding through fine diamond pads, you can erase etch marks and return marble to its original...