Miter Cutting

The angle formed between the wall and the crown molding is referred to as the spring angle. The following graphic shows how the spring angle is measured.

Most moldings on the market have a 38 or 45-degree spring angle This section describes how to set up your powered miter saw to properly cut crown molding.

Each section contains a table that describes how to configure the miter saw. On a regular miter saw, you will need to lay the molding at an angle and use the Miter settings.

On a compound miter saw, simply adjust the Tilt and Miter settings.

Inside Corner, Left

Inside Corner, Right

Outside Corner, Left

Outside Corner, Right

Coping or Back Cutting
One of the most basic techniques for installing crown molding involves coping or back-cutting a piece of crown molding. Back cutting is most commonly used for inside corners and provides a clean joint when properly performed.

To perform a back cut, follow these steps:

1. Miter cut the molding.
2. Use a coping saw to remove material from the edge of the molding.

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3. Use a rounded file to provide a clean, finished look.

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4. Install the piece according to the basic WireTracks installation directions.

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Raceway Cut

A raceway cut is completely hidden by a back cut, but provides a route for wires. The following shows an example of a raceway cut.

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