184 MODERN BLACKSMITHING 



ing; this is done by shifting the tail stock to one side. 

 Or there are threads to be cut; know just how to 

 arrange the lathe to cut any number of threads to the 

 inch. 



Next to care of lathe comes care of tools. When 

 there are a few minutes spare time see that the tools 



are sharp. Keep them sharp. They will do the work 

 better, faster and with much less strain on the machine. 

 All cutting tools should be made diamond shape, 

 with either one side or the other, depending on the 

 way the carrier is to move, made a little higher; the 

 right side being highest when the carrier is moving to 

 the right, and vice versa. The sharp edge of smooth- 

 ing tools is made square across, like a plane bit, and 

 thread-cutting tools should be made the same shape as 

 the thread to be cut, 



