HOW DO I POLISH MARBLE OR GRANITE?

When your marble countertops or flooring becomes dull and lifeless, what is one to do? 
The shine of marble or granite is captivating, yet it’s a far departure from its natural state as a coarse natural stone with no shine. So how do they get it shiny? The answer comes by way of polishing.
A Barsanti industrial polishing machine
Where does the shine come from?
The luster of marble and granite comes from the multi-step process of polishing. Polishing smaller pieces of marble or precious stone can be done by hand and achieved by using either a sanding block or palm sander. On a larger scale, industrial machinery is  equipped with coarse “shoes” or sanding blocks and along with constant force and pressure, it can polish a huge slab with efficiency.
The polishing process begins with a coarse grade paper, and the process is repeated once again using a finer grit paper or sanding block. With each pass, the grit gets finer until right finish is achieved.  In short, the act of polishing the surface area flattens the crystals embedded in the marble and these reflective properties are what help create the shine and luster you appreciate.
How do I bring back the shine of marble?
A little sweat is all it takes to bring back the shine of your marble. By following the steps below you can easily re-polish it yourself, or you could always consult with a local professional that specializes in marble polishing or repair.
Before & After Polishing
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1. Begin my clearing the area you would like to clean. Spray the marble with water and be sure the surface area is completely wet prior to sanding.

2. Using a palm sander (or sanding block), attach a piece of 120-grit sandpaper on the pad.

3. Begin sanding the marble in a circular motion and apply a consistent amount of pressure. Once you have completed sanding the area, clean it off to remove any reside grains, and repeat the process with a 300-grit sandpaper, and follow it up with yet another session using 600-grit.

4. Wipe the marble with a damp sponge to remove dirt or any sanding dust.

5. Once dry, inspect the area you worked on. If you are happy with the results we suggest you seal your precious stone using oil-resistant sealers.

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