Today, a miter saw (also called a chop saw or drop saw) usually refers to a power tool used to make a quick, accurate crosscut in a workpiece. It is most frequently used to cut wood, although some plastics and light metals can also be cut with the tool. Common uses include framing operations and the cutting of Molding (decorative). Most miter saws are relatively small and portable, with common blade sizes ranging from eight to 12 inches.
The miter saw makes cuts by pulling a spinning circular saw blade down onto a workpiece in a short, controlled motion. The workpiece is typically held against a fence, which provides a precise cutting angle between the blade and the longest workpiece edge. In standard position, this angle is fixed at 90°.
A primary distinguishing feature of the miter saw is the miter index. The miter index allows the angle of the blade to be changed relative to the fence. While most miter saws enable precise one-degree incremental changes to the miter index, many also provide "stops" that allow the miter index to be quickly set to common angles (such as 15°, 30°, or 45°).
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