MODERN BLACKSMITHING 



123 



handle is broken use rock 

 salt and powdered glass 

 as a welding- compound. 

 Stick the ends together in 

 the fire. When they are 

 about ready to melt tap 

 lightly on one end while 

 your helper holds the 

 other end steady. In 

 one case out of a hun- 

 dred it will stick enough 

 to hang together. If 

 you have nothing else to do this will be a nice thing to 

 kill time with 



CASE HARDENING 



Iron and steel may be case hardened with either of 

 the following compounds: Prussiate of potash, sal- 

 ammoniac of equal parts. Heat the iron red hot and 

 sprinkle it with this compound, then heat again and 

 sprinkle, and plunge it while yet hot in a bath of salt 

 water. 



Another: Cyanide of potassium; grind it into a fine 

 powder and sprinkle over the iron while red hot, and 

 plunge into a bath of salt water. This powder will 



