432 



THE YOUNG FARMER'S MANUAL. 



FlG. 184. 



size, they should be marked out 

 with a templet, shojj^it Fig. 

 of a piece of 



184, which is made 

 sheet-iron, or a thin piece of hard 

 wood, and is placed withoneend 

 on the collar against the side of 

 the saw ; and as each tooth is filed 

 the templet may be placed against 

 the saw, in order to determine 

 whether the face or lack of a 

 tooth requires more filing or not. 



664. Fig. 185 shows the form of a templet for marking out 



Fio. 185. 



MANNER OP MARKING OUT THE CORRECT 

 SHAPE OF SAW TEETH. 



new teeth on a saw like the shape of the teeth at J, Fig. 183. 

 The templet may be formed to mark out any style of teeth. 



MILL SAWS. 



665. "Why is lumber often sawed of all shapes and of variable 

 thicknesses at the great majority of saw-mills ? In most instances 

 it is in consequence of the saw being in improper order. Should 

 the set get out of any of the teeth on either side, by passing a 

 hard knot a saw will most assuredly run, and make the lumber 

 thicker or thinner in the middle than it should be. From what 

 has been' said of filing and setting other saws, the tyro will be 

 able to file and set a mill saw in a proper manner. Where both 

 hard and soft logs are to be sawed, it would be good policy to 

 have a saw for each kind of wood. For sawing hard wood logs 

 the plate should be rather thick and stiff, with the teeth nearer 

 together, and rather short, to retain the set longer, than in a saw 

 designed solely for soft wood. In order to saw lumber or timber 

 of an exact size, and very true and smooth, the saw or saws must 



