Making a 45-degree angle in a countertop creates a corner in the counter. When these two pieces meet together, they make a 90-degree angle. This is called mitering, or fitting, pieces together.
Things You'll Need
- Measuring tape
- Carpenter's square
- Circular saw
Determine the measurements of the surface that the countertop will be installed with a measuring tape. Measure the back edge along the wall, which will provide the correct length for the longest section of the countertop. Mark the measurements on the surface with a pencil.
Transfer the measurements to the countertop with a pencil. Turn the cabinet over and draw the marks on the underside with a pencil and a straightedge.
Hold a carpenter's square along the lines you drew on the underside of the countertop.The square will help you create a 45-degree angle. Mark the angle with a pencil. You will use this line to create the cut.
Make a 45-degree angle cut in the countertop. Cut with the countertop flipped upside down and saw along the line you drew.
Repeat this method with the second section of countertop. When the two pieces fit together, the two 45-degree angles will make a 90-degree corner.
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