A mortising machine is a woodworking tool that makes mortises for mortis and tenet joints that are popular on arts and crafts and mission style woodworking.

The partner of a mortise is a tenon. A mortise is a cavity or hole cut into a piece of wood or other material, while a tenon is a projecting piece of wood or other materials that is designed to fit into the mortise, creating a joint. Together, a mortise and tenon form a strong and stable connection in woodworking.

Generally speaking a table saw is the tool of choice for tenons with either a stacked dado set or a tenoning jig.

Mortises are most often cut out with a drill press or router and squared up with a chisel or there is a specialized tool made to cut out the mortis that works something like a drill press but leaves squared edges.

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 10 words with the pattern M--T-S--. That is, eight letter words with 1st letter M and 4th letter T and 6th letter S. In alphabetical order, they are:

maltases

maltoses

mantises

mantissa

meatuses

mestesos

mortised

mortiser

mortises

mostests