Polish marble by sanding it with progressively finer grit sandpaper until you reach the desired level of polish. The length of this project depends on the amount of marble you want to polish. You need an angle grinder, sand pads, a cloth, a dust mask, work gloves and safety glasses.
- Prepare the grinder
Attach a 30-grit sanding pad to the angle grinder. You also need to purchase 60-grit, 100-grit, 220-grit, 320-grit and 600-grit sanding pads.
- Put on the safety equipment
Put on the safety glasses, work gloves and dust mask to protect yourself from flying marble pieces and marble dust.
- Sand the marble
Turn on the grinder. Gently press it to the marble's surface, and move it in a circular motion until you have polished the entire surface.
- Wipe off the dust
Use a cloth to remove any marble dust from the surface.
- Switch the sand pads
Remove the 30-grit sand pad, and replace it with a 60-grit sand pad.
- Sand the surface
Repeat the sanding process with the 60-grit sand pad. Remember to sand in a circular motion.
- Repeat the process
Repeat the sanding process with each sand pad, working your way up to the 600-grit pad for the highest polish. Remember to dust the surface after every round of polishing.