MODERN BLACKSMITHING 63 



BUTCHER KNIFE 



To make a butcher knife, one smith will simply take 

 an old file, shape it into a knife, and harden. The 

 best way to make a knife is to first draw out a piece of 

 iron % inch wide and -^^ of an inch thick, twice the 

 length of the knife. Prepare the steel the same width 

 as the iron, ^ of an inch thick, weld this steel in 

 between the iron. This will make a knife that will 

 not break. When ready to harden heat to a low red 

 heat, cool off entirely in water. Brighten and hold 

 over a hot iron until brown, then cool off. 



The steel should be good tool steel, a fiat file will 

 do, but the cuts must be ground or filed off entirely 

 before you touch it with the hammer, for if the cuts 

 are hammered in they will make cracks in the edge of 

 the knife, and the same will break out. 



HOW TO REPAIR CRACKED CIRCULAR 



SAWS 



If a circular saw is cracked it can be repaired so that 

 the crack will go no further, and if the crack is deep, 

 it can be so remedied that there will be no danger in 

 using it. Ascertain the end of the crack, then drill 

 a j\-inch hole so that the crack will end in that hole. 

 Countersink on each side and put in a rivet. Don't 

 let the rivet stick its head over the face of the saw. 



If the crack is deep put another rivet about half an 

 inch from the edge. If the saw is too hard to drill, 

 heat two irons about i % square or round, square up 



