Joist were typically planed smooth (wrought) and sometimes chamfered or beaded. Joists may join to their supporting beams in many ways: joists resting on top of the supporting beams are said to be "lodged"; dropped in using a butt cog joint (a type of lap joint), half-dovetail butt cog, or a half-dovetail lap joint. Joists may also be tenoned in during the raising with a soffit tenon or a tusk tenon (possibly with a housing). Joists can also be joined by being slipped into mortises after the beams are in place such as a chase mortise (pulley mortise), L-mortise, or "short
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