90, is a fine crosscut-saw, with a rib of steel along the back, which gives to it its name.

Since it is intended for small accurate work, the teeth have little or no set.
In sawing, the wood may be held either in the vise or on the bench-hook.

To help start the saw and at the same time to keep the edges of the cut sharp, it is well to make a little groove with the knife, on the waste side of the line to be followed, cutting the side of the groove next to the line at right angles to the surface.

The saw drops directly into this groove, Fig.91.In starting the saw cut, the saw should be guided by holding the thumb of the left hand against the side of the saw just above the teeth.

Until the kerf is well started, the saw should be held so that the teeth just touch the wood.