Determine where you need to make the cut on the counter. You may have to cut the counter during installation to make it fit in a particular area or you may need to cut out a shape for a sink or stovetop that you will install over the countertop.
Draw the outline of the cut that you intend to make with a pencil. Use a straight ruler to help you draw crisp and steady lines.
Put on ear protection, eye protection and a dust mask. Drill through the corners of the outline with a ¼-inch diamond drill bit. Use the 2-inch hole saw to enlarge the small holes to 2 inches in diameter.
Adjust the saw so that it will make a 1/8-inch deep cut. Saw 1/8 inch deep along the cutting lines on the top of the countertop. Set the blade to saw at ¼ inch. Saw along the cutting lines again. Set the saw to cut 1/8th inch deeper than the ¼ inch measurement. Cut the lines again. Continue to increase the depth of the cut each time by about 1/8 inch until the counter is cut all the way through. Cutting a small amount at a time prevents the counter from cracking.
Clear away all dust from the area. Use a dry rag first, then wipe away any remaining dust with a damp rag.
Brush some resin sealer onto the exposed areas of the countertop. This will seal the resin and prevent further damage. Allow the sealer to dry for 24 hours.