388 



strap it a little on the leather, and if the steel is good and prop 

 erly tempered, it will clip a hair. 



SHARPENING SHEAES 



566. Is a very short job. Fig. 153 represents a transverse 

 section of one of the shear blades ground at a proper angle. 



FIG. 153. 



\ 



V 



A TRANSVERSE SECTION OF A 8HEAB BLADE PBOPERLT QEOtTNI). 



Never grind any shears on the flat side of the blade. The 

 grindstone should run very true, and the blade should be held 

 square across it as it revolves towards the edge. If the edges of 

 the blades have become worn off on the flat side where they 

 cut, they must be ground off on the edge not on the flat side 

 until the flat side is most prominent at the cutting edge. Whet 

 sheep-shears and wife's shears on an oil-stone, and if they will 

 cut wet newspaper they are in good order. If shears are ground 

 at an angle as acute as chisels, in cutting thick hard substances 

 the edge would yield bv bending or breaking. 



BENCH PLANES. 



567. A farmer needs a good set of planes, consisting of a 

 jack-plane for rough work, a fore-plane or short-jointer, larger 



