Mason's mitre with much less waste than occurs with a common mitre joint, in which triangular sections must be removed from the ends of both joint members. The terms "back mitre" and "mason's mitre" (or "miter") are often used interchangeably, but are different types of joints, and used for different purposes. Both joints are traditionally used in stone or woodwork. Neither joint requires that one part be coped (or fit) over the other. In the back mitre, the joints follow the mitre and stile/rail joining lines. In the mason's mitre, the intersecting mouldings are carved within a single stone block or the
Mitre box in the mitre box are cut at 45 degrees and 90 degrees. The mitre saw combines the features of a mitre box with a backsaw. In the past, mitre boxes were constructed mostly of wood. Some have had metal guides fitted to reduce wear on the slots. Today, mitre boxes are also available in other materials such as moulded plastic and cast aluminium. When carpenters used to make their own mitre boxes, it was common to use a mitre box until its guide slots became worn and then make a new one out of scrap timber. There is still a