Size Of Saw Teeth. For proper action, each tooth should begin to cut when it enters the work, and continue cutting until it leaves the kerf, and, since the space in front of each tooth must contain the material removed by it, the capacity of the space must be increased in those saws which are required to work through a considerable depth of material. A two-handed cross-cutting-saw for logs, therefore, has the teeth widely placed, thus making the intervals large.

In panel-saws, such as are used at the bench, except in speFig. 58 cial cases, the space is of the same size and form with the tooth. When the spaces are large, the teeth must be large, and, since the size of the spaces has a direct relation to the amount of material removed, it may be said that the size of the teeth depends on the size of the material in which the saw is to work.

The size of saw teeth is expressed by the number contained in an inch. Thus "6 teeth" means that the distance from one point to another is 1/6 ".