Dampen a piece of 400 grit sandpaper and beginning again at one end evenly sand the entire cultured marble vanity surface as you did before.
Wet sanding cultured marble.
I was disappointed by how quickly my cultured marble countertop lost its shine so one day i took out my auto polisher and went at it.
With a little elbow grease.
Wipe your vanity surface again with a clean soft cloth.
While this method will work fine for statues tile and marble countertops sanding large areas of marble like marble floors requires a completely different process and technique.
Before sanding or grinding any marble surface it is important to clean the area thoroughly.
Cultured tops are made of polyester resin with a clear topcoat called the gel coat.
Keep the sanding even level and straight.
Change your damp pieces of sandpaper as required.
Dirt and dust will compress into the marble further scarring or discoloring the surface.
Sanding marble is a time consuming process.
If the cultured marble surface still isn t smooth and shiny try wet sanding with 1 000 grit wet dry sandpaper also available at auto supply stores followed by buffing with rubbing and polishing compounds to remove any scratches from the sandpaper.