Choose the "RIGHT" diamond blade:

Glass tiles and glass mosaics are pieces of glass formed into shapes with unique depth and color. Cutting glass tiles can be complex for the installer because glass tiles are more rigid and fragile than ceramic or porcelain tiles, chipping or cracking occurs when too much pressure is applied.  Whether the glass is clear, has color throughout the glass, or has color painted on the back, correctly cutting the glass will help prevent chips and cracks in the glass edge and surface. The best way to cut glass tiles and mosaics is using a wet saw with the correct diamond blade. The method for cutting glass with a diamond blade is similar to cutting ceramic or porcelain tile. However, cutting coarser materials like ceramic, porcelain, granite or marble usually requires a diamond blade with large grit of average standard quality diamonds (see Figure1). Cutting glass tile requires a diamond blade with high concentration of small grit of high standard quality diamonds (see Figure2) for a smooth and clean cut. Therefore, you cannot use a diamond blade designed for ceramic or porcelain tile to cut glass tiles or glass mosaics, because the larger diamond will rip and chip the edges, no matter how carefully you work.

Figure 1     Figure 2

 

Step1 - Ensure the glass tile blade is secured on the wet saw properly.

Step2 - Ensure the water is coming out from the water sprayer or reservoir.

Step3 - To prevent back layer chipping, back side should be facing up.

Step4 - When cutting, be sure to press the glass tile/mosaic slowly, lightly and steadily.

Step5 - Allow the diamond blade to do the work.

Step6 - Avoid adding stress to the last portion of the cut by cutting slowly.

 

 

For extra prevention of chipped edges, cut halfway through the width of the glass tile/mosaic on one side, then turn it over and cut the rest of the way through the glass.