I spent dozens of hours creating my bathroom mosaic vanity top, and now parts of the gorgeous resin finish are blotchy.

I worked dozens of hours to create a beautiful mosaic vanity top, and when I pulled off the masking tape after grouting around the edges, it left a couple milky spots

Using a straight edge and moving along the edge was recommended over using tape, but after trying that on a seldom-viewed frame, I can say two things: damned slow going, and paint bleed as soon as you move the straight edge