Q:

How do you cut a 90-degree angle on crown molding with a compound miter saw?

A:

To cut a 90-degree angle on crown molding using a compound miter saw, simply hold the molding on the saw bed upside down. Cut at the same angle as the shape of the wall's corner.

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  1. Prepare the left corner molding

    Place the molding on the saw bed upside down and backward. Put the bottom of the molding face-up to make a left corner cut. Most of the molding sits to the right of the saw.

  2. Make the inside left corner cut

    Turn the blade 45 degrees to the right. Turn on the saw. Carefully saw off about 4 inches from the end of the molding at this 45-degree angle. Set the molding against the corner to check that the angle is flush against the wall.

  3. Prepare the right corner molding

    Turn the other piece of molding upside down on the saw bed. Adjust the bottom of the molding so that it is face-up. Most of the molding sits to the left of the saw.

  4. Make the inside right corner cut

    Turn the blade 45 degrees to the left. Turn on the saw. Saw off about 4 inches from the end of the molding. Hold the finished cut flush against the wall. Place it next to the previous molding cut to check that the corners fit together.

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