Fig. 27.
12. The Crosscut Saw.
—[Fig. 25] shows the teeth of a crosscut saw. This saw is filed so that the cutting edges are on the sides of the teeth. Every tooth is sharpened to a point, one on the right side, the next on the left, giving two parallel lines of sharp points with a V-shaped groove between.
The pitch given the teeth of a crosscut saw will vary with the hardness or softness of the wood which is to be cut. For all-around use the amount of slant is about one-third of the whole tooth. [Fig. 27].
13. The Rip-saw.
—The teeth of the rip-saw are chisel shaped, [Fig. 28], and are made by filing straight across the blade. The front or cutting edges are filed so that they are square, or at right angles to an imaginary line passing through the points of the teeth.
Fig. 28.