Quarter round moulding is usually no wider than 1/2 inch at the base. It can be difficult to cut because it has no square edges, but if you hold it secure in the right position, you can get clean mitre cuts. A mitre saw is the easiest way to cut quarter round because you can see where your pencil mark is, and you can make adjustments by sliding it back and forth to position the blade perfectly over the line before you bring the blade down.
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Things you need
- Mitre saw
Cut a 45-degree mitre on the end of the quarter round by releasing the lock on the mitre saw and swinging it to the right side. Watch as the indicator nears the 45-degree preset as you push. Slow down and let the blade lock into the preset 45-degree notch.
Lay the moulding on the saw with the flat base of the moulding against the fence. Slide the end of the moulding past the saw blade slot--where the saw will come down--by 1 inch.
Hold the moulding with your left hand. Grab the handle of the saw with your other hand and pull the trigger to turn on the saw. Bring the blade down slowly to trim off the end of the quarter round.
Measure from the long point of the quarter round--the end you just cut--lengthwise down to your desired measurement and make a mark on the moulding with a pencil.
Flip the moulding end for end so that the cut end is now extending to the left. Place the moulding on the saw with the base of the moulding against the fence. Grab the saw handle and bring the blade down to almost touching the moulding.
Crouch down and look at the point where the saw blade almost touches the moulding. Slide the moulding in the appropriate direction to bring the pencil mark to the edge of the saw blade. When you have the pencil line and the saw blade aligned, let the saw blade spring back up halfway and pull the trigger to turn it on.
Hold the moulding tight with your left hand. Bring the saw blade down and cut across the pencil line. Release the trigger and let the saw spring back up.
Tips and warnings
- On your second cut, if you can't quite see where your saw blade and your pencil line will meet, it is sometimes beneficial to cut the moulding long and then cut it in several tiny increments until you reach the pencil line
- Always wear safety glasses. Be careful with any small cut-off pieces of moulding re-entering the blade and kicking back. Brush or blow them off the mitre saw as soon as you can.