40 



FARM MECHANICS 



drilled dry. Light work such as hoop-iron may be 

 drilled dry, but the cutting edge of the drill will last 

 longer even in light work if the drill is fed with oil or 

 water. 



Figure 50. (1) Electric Drill-Press. A small electric motor is 

 attached to the drill spindle. (2) Tram Points. Two steel points 

 are fitted with thumbscrew clamps to fasten them to a long wooden 

 bar. They are used to scribe circles too large for the compasses. 

 (3) Ratchet-Brace. Two braces, or bitstocks, are needed. A large 

 brace with a 6" radius for large bits and a small brace with a 3" 

 or 3%" radius for small bits. 



In using drill-presses, some extra attachments come 

 in very handy, such as a screw clamp to hold short 

 pieces of metal. Before starting the drill, a center 



