THE YOUNG FARMER'S MANUAL. 



425 



CIRCULAR SAWS. 



651. Fig. 183 represents a circular saw with four different 

 kinds of teeth. Three kinds, C B, B A, and A D, are for rip 

 ping, and the portion between D C is for cutting across the 

 grain. To find the angle for filing the face of the teeth, strike a 

 circle, the dotted line a, half the diameter of the saw, and a line 

 from the points of the teeth to one side of this circle, will give 



FIG. 183. 



A CraOTTLAR SAW HAVING FOUB KINJJ8 OP TEETH. 



the hook of the teeth. The marks may be made with the sharp 

 point of a steel file. The angle for the hook of the teetji may be 

 more obtuse or acute, as at 5, from A to _D. TJie teeth between 

 J5 and C are kept in order with less filing than those with circu- 



