How to repair the cracks on the kitchen countertop: 1. Clean up cracks and rubbish. You can clean the cracks in the kitchen with scissors and metal blades. If the crack is too small for glue to enter, you can use an electric drill to slot it. Of course, this is to open a slightly larger gap. Clean up the black things on the edge of the gap, or there will be black lines at the joint between the board and the glue when gluing. 2. Blending glue and curing agent Blending 10 glue and 1 curing agent. Now the glue you buy is usually colored, and the glue needs to be determined according to the color of your kitchen countertop. If it is milky white, if it is brown, use brown glue. The curing agent and glue must be mixed according to the proportion in the instructions. 3. When pasting masking paper or tape and then applying glue water, you can first paste it at the gap with masking paper machine or tape, and the glue will be coated along the masking paper, which will look better and be less laborious to polish. 4. Glue water. Scrape the glue to the gap with a blade, and scrape it with a blade. When the glue dries, you can tear off the tape. 5. Polishing and polishing is the last step. It can be polished when gluing, and the kitchen countertop glue is polished with sandpaper. This answer is suitable for repairing the cracks on the mesa in most cases.