Fig. 8.
Fig. 9.
Fig. 10.
Fig. 11.
[Fig. 8] shows how the groove should appear on looking down the edge of the saw. The action should be such that the bottom of the cut or kerf will present the appearance as shown in [Fig. 9], and not as in [Fig. 10]; the cutting action is shown in [Fig. 11], the cutting being done with the outside of the tooth; the fibre of the wood is severed in two places, and the wood is crumbled out from point to point by the thrust of the saw.
The proper amount of bevel is very important, as is demonstrated by the [above figures], for if too much bevel is given the points will score so deeply that the fibres severed from the main body will not crumble out as severed but will be removed by continued rasping. This is true, particularly in hard woods, as they require less bevel, as well as pitch, than soft wood.