Sometimes, young (and old…) woodworkers can use a little help sawing a board accurately, especially if the board must have a specific angle or length. A miter box helps a woodworker saw a 90 or 45 degree angle into a piece of wood. They are cheap to make, easy to modify and cut accurately.

Miter boxes are channels with slots cut into them. The slots guide the hand saw blade for accuracy and precision. The sides allow the user to clamp down the miter box and work pieces to the table or work bench, which greatly increases safety.

To use a miter saw, place your work piece in the channel, with your cut line against the kerf of the wood. Use a clamp to clamp the work piece and miter box to the table, as shown. Then place the saw in the cutting slot and saw away!

If you like this tutorial, I have more woodworking and Maker projects at www.woodshopcowboy.com.

Step 1: Tools & Materials

Materials

3 strips of plywood, 3 1/2” wide by 6” long. You can also use 1” x 4” x 6’ pine from the big box store, as straight as possible.
1 strip of plywood, 1” by 6” long. Use long square dowels from the big box store if you can’t prep the wood with a table saw.
Nails or screws.
Glue.

Tools

Hammer or screw driver.
Hand saw.
Woodworking vise or small bar clamps.
Large combination square or square.

Step 2: Build the Body

Glue and nail the 3 1/2” x 6” plywood strips together in a U shape as shown.
Pre-drill, glue and nail the 1” strip to the bottom of the U as shown.

Step 3: Saw the Kerfs

Use the combination square to mark a 90 degree and 45 degree cuts as shown.
Install miter box in vise so the strip is captured in the vise.
Use the saw to carefully saw out saw slots. Cut EXACTLY on the line.

Step 4: A Few Tips for Use

Japanese saws work wonderfully in projects like this. You might notice one of my miter boxes has a strip missing from the front side. This spot acts as an access point for a small clamp during use. Check out the picture above to get a better view.