Mitre saws have presets for popular angles. The saw automatically locks into these angles when you swing it to the right or left. The mitre saw will also cut any odd angle between the presets. The only complicated part is finding the odd angle to begin with. To find any angle you need to use models. Cut and fit several times until the angle works and then transfer the angle to the moulding.
- Skill level:
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Things you need
- Safety glasses
- Boards, 3/4 by 11.5 - 12 inches
- Power mitre saw
Hold the two boards up to the angle that you wish to cut. Try to imagine where the mitre angle will cross the ends of the two boards and draw corresponding lines across the ends of the two boards with a pencil.
Set one of the boards on the mitre saw fence under the blade. Grab the mitre saw handle. Swivel the blade to the right or left to match the line that you drew on the board. When the blade lines up with the pencil line, pull the trigger to turn on the saw. Bring down the blade cut the board at the line.
Place the other board on the mitre saw and trim the end off the board without changing the angle. You don't need to use the line that you drew this time.
Hold the two boards in place where the odd angle is and bring the two angles together. If you drew your lines right, the angles will come together perfectly. If you have a gap on the back of the angle swing the saw blade 1 degree sharper and cut both boards again. Test the fit again and repeat until the angle closes tightly in the back to establish the odd angle.
Cut 1 degree at a time at a lesser angle if you have a gap in the front of the boards until the gap closes to establish the odd angle. Leave the saw on that setting and cut the moulding.
Tips and warnings
- Keep a sharp blade on the mitre saw. The cleaner the cut, the better the angle.
- When making multiple cuts on the end of the board, just barely trim the edge without creating any small pieces. Small pieces can kick back out of the saw.
- Always wear safety glasses when working with wood.