PATTERN MAKING 



11 



A crosscut saw for ordinary work should have five or six points 

 to the inch; but for fine work ten or twelve points 'would be better, 

 especially for dry woods, either soft or hard. 



A section of a 6-point crosscut saw is shown in Fig. 13, and 

 one of an 13|-point in Fig. 14. 



In considering rip saws we find that the rake or bevel is all on 



Fig. 13. 



the back of the tooth. In crosscut saws the -rake is on the side of 

 the tooth, as shown at a (Fig. 13.) In ripping, the point of the 

 tooth acts as a chisel, cutting off the fibers of the wood, each tooth 

 chiseling off a shaving as it passes through the board; but in 

 crosscutting, the side of the tooth 

 does the cutting, and therefore must 

 have its bevel on the side. 



In Fig. 13 the bevel or fleam 

 of the tooth is about 45, and, as 

 shown, there is no hook or pitch, 

 the angle being the same on both 



Fig. 



the front and back of the tooth. This form of tooth woiks well in 

 wet or in very soft wood; but for wood that is well seasoned, and 

 for all the harder and firmer woods, the pitch of the front of the 





Fig. 15. 



tooth should be at an angle of about 60 to the tooth edge of the 

 blade, as shown in Fig. 15, and at I in Fig. 16. The amount of 

 pitch in the teeth of a saw may be varied as demanded for different 

 purposes or for different woods, but in all cases shoiild be such as 



