- 1). Adjust the miter saw for the cut. For straight cuts, adjust the miter saw to zero and lock in place. For angled cuts for corners, which in most cases will be a 45-degree cut, adjust the miter box to the 45-degree mark by squeezing the angle adjustment knob. Once there, tighten the knob to lock in place.
- 2). Place the crown molding on the miter saw with the bottom edge of the molding pressed against the fence of the saw. Some miter saws have fencing that can be adjusted to hold lumber at a certain angle. This type of fencing will be located at the front of the saw cutting table and can be loosened or tightened.
- 3). Hold the crown molding firmly against the fence of the miter saw with your hand at a comfortable distance from the blade. This will protect you from cutting yourself or having the molding kick back at you while cutting.
- 4). Grab the handle of the saw and pull it down to the crown molding. Touch the blade to the line of where you want to cut. Pull the saw handle up and pull the trigger to start the saw. In a controlled manner, push the handle down and cut the crown molding. Let go of the trigger and pull the handle of the saw back to its start position.
- 5). Using a coping saw, cut the corners of your crown molding to create a matching profile to mate the molding together at the ceiling corner. The best way to do this is to hold a piece of crown molding at a 45-degree angle on the mating piece of crown molding. When you have it at the 45-degree angle, it will look as it does when it is installed on the ceiling corner. Trace the face of the molding onto the mating piece using a pencil. Using the coping saw, cut along the line that was just traced. In the end, you will have a cut that matches your crown molding's profile, which will create a clean inside corner. Gaps may be filled in with wood filler and then sanded down.
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