Drilling operation 0 Drilling in wood
. When drilling in wood, best results are obtained with wood drills equipped with a guide
screw. The guide screw makes drilling easier by pulling the bit into the workpiece.
Drilling in metal
To prevent the bit from slipping when starting a hole, make an indentation with a centerpunch and hammer at the point to be drilled. Place the point of the bit in the indentation and start drilling.
Use a cutting lubricant when drilling metals. The exceptions are iron and brass which should be drilled dry.
CAUTION :
*Pressing excessively on the tool will not speed up the drilling. sure will only serve to damage the tip of your bit, decrease shorten the service life of the tool.
In fact, this excessive pres- the tool performance and
*There is a tremendous force exerted on the tool/bit at the time of hole breakthrough. Hold the tool firmly and exert care when the bit begins to break through the workpiece.
;*A stuck bit can be removed simply by setting the reversing switch to reverse rotation in order to back out. However, the tool may back out abruptly if you do not hold it firmly.
*Always secure small workpieces in a vise or similar
Overlaod protector
The overload protector automatically cuts out to break the circuit whenever heavy work is prolonged. Wait
10
