How to Cut Ceiling Moulding
Ceiling moulding is mainly for covering the gap between the wall and ceiling, though most homeowners also prefer to have a moulding that is stylish. There are three main types of ceiling mouldings, called crown, cove, and bed mouldings. Although cove moulding is the simplest and easiest to cut, crown and bed mouldings are usually more decorative. Cutting ceiling moulding is a little bit different than floor mouldings because all ceiling mouldings are installed at either a 38 degree angle or 45 degree angle/ Does this Spark an idea?
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Instructions
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Measuring and Cutting for Ceiling Moulding
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Set the "spring angle" on the miter saw to either 45 degrees or 38 degrees. This is the angle the moulding covers at the joint between the wall and ceiling. This angle will depend on the specific molding you bought, so you will have to check the instructions of the molding itself. If you can not find those listed anywhere, you should call the store you purchased it from and have someone help you out.
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Measure from one end of the wall to the other. If there are any breaks in the wall, such as an archway, measure from one end of the wall to the archway (or whatever the break is).
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Place the moulding in your miter saw upside down to ensure a clean cut.
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Cut both ends of the moulding at a 90 degree angle so that they will butt up against the adjoining wall when installed.
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Measure the other wall the same way you did the first.
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Place the moulding upside down in the miter saw, and cut the end that will meet the first piece of moulding at a 45 degree angle. Make sure you are cutting in the right direction. For an inside corner, the bottom of the moulding should be longer than the top. For an outside corner, the top will be longer than the bottom.
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Repeat the process for any inside corners. For outside corners, the process is similar, however some of the angles will be different. Place the moulding just like you would for an inside corner, but cut the first end by setting the miter saw 31.6 degrees to the right and make the first cut.
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Place the adjoining molding in the miter saw upside down, and position it to cut the side that will meet up with the first piece of moulding. Adjust the miter saw so that it will cut 31.6 degrees to the left and make the cut. The two ends you just cut should mirror each other. Repeat this process for any outside corners.
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Tips & Warnings
When determining which direction to cut in, remember that you've placed the moulding upside down, so the edge that is against the vertical fence of the miter saw is the bottom.
