Measure and mark the cut line on the ceramic tile. When making your measurements, ensure that you allot for the necessary gap for the grout.
Place the tile in a padded bench vise and tighten it securely. Install the 402 mandrel into your Dremel tool and attach the 545 cutting wheel to the top of the mandrel using the mandrel screw and a flat-head screwdriver.
Set the speed setting on the Dremel to 20,000 RPM and grip the tool in both hands to ensure you have control when cutting the ceramic tile.
Cut along your cut line mark with the Dremel. Make several shallow cuts along the line instead of a single deep cut. While several shallow cuts take longer, this method prevents you from breaking the tile.