In [Fig. 2757] we have two saws r and s, the latter having fleam on the front and the former on the back face of the tooth, the amount or degree of fleam being equal.
Fig. 2758.
In [Fig. 2758] we have indentations of their teeth. The teeth of s would leave a mark as at e f, and r would leave a mark as at g h. The side cut f being more than the side cut g, and the front cut e being at a less angle to f than the front cut h to g, it follows that the saw s would be the best, provided the grain of the wood ran diagonally as shown, not only because it has more side and less front cut, but also because its cutting edge is keener on the side, as is seen on comparing the lines p and a in [Fig. 2757].
Fig. 2759.
If we give fleam to both faces we alter the indentation, as denoted in [Fig. 2759], in which e f represents the line of tooth cut when one face has fleam, and g h the line of tooth cut when both faces are fleamed, the shape of the actual saw cut being shown at j.