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How to Make Setup Blocks for Crown Molding

Here's an easy and efficient way to ensure corners come out right when cutting crown molding -- use setup blocks. DIY experts explain the process.

More in Home Improvement

  • Time

    30 Minutes

  • Price Range

    $1 - $50

  • Difficulty



Step 1: Make Setup Blocks

When cutting crown molding, use setup blocks (Image 1) to help figure out how to orient the molding and the blade on the miter saw to ensure the corners come out right.

Make two sets of setup blocks, one for outside corners and one for inside corners (Image 2). Each set of blocks has a left and a right side, so be sure to label each piece.

Step 2: Put the Block on the Saw Table

The setup blocks each have an end board with a rabbet cut into the bottom. The rabbet fits over the lip of the saw table. When the setup block is on the saw table, the rabbet ensures the block will fit only one way.

put the block on saw table

Step 3: Orient the Table and Molding

Once the block is set on the table, you can see by the way it's oriented if you need to turn the table or set the saw at a 45-degree bevel. You can also see which way the molding you will be cutting should be turned so that you don't cut it upside down.

set saw at 45 degree bevel