How to Use a Mitre Box

A mitre--or miter--box is a simple tool with grooves that align a saw to make precise cuts at either a 90-degree or a 45-degree angle. A mitre box is used primarily for cutting thinner lumber such as trim or molding but not for larger pieces of wood such as a 2-by-4. The mitre box usually comes with a saw at the hardware store. Use the box to cut pieces to exact angles to help make trim work look professional. You may even want to use it for simple 90-degree cuts for a clean, straight cut.

• 1

  Measure the piece you want to cut, and mark it with a pencil.

• 2

  Lay the piece in the tray of the mitre box. Align your mark with the center of the slot in the box's side, on the angle you need to cut, either a 45- or a 90-degree angle.

• 3

  Grip the wood firmly with your non-sawing hand. Push the wood against the inside edge of the box for extra support in bracing it.

• 4

  Slide the saw into the appropriate slots for the cut, and draw it across the wood lightly. Take your time, and establish a groove before cutting harder. This will keep the saw from jamming and catching.

• 5

  Saw with a bit more force and speed once the cut gets started, but don't apply downward pressure; let the saw do the cutting.

• 6

  Maintain your speed, keeping the saw level as you cut. As you reach the end, don't slow down or you may end up with a ragged edge at the bottom; cut clean through the wood.