Holding tool
Hold the tool as shown in the figure. When drilling a large diameter hole, hold the tool frimly with both hands.
Drilling in metal
Punch a small hole in the metal to prevent the bit from skittering when starting to drill a hole.
Use cutting lubricant on the bitto facilitate drilling if necessary.
Pressing down too hard on the tool will not speed up the drilling. In fact, this undue pres- sure will only serve to damage the tip of your drill bit, decrease your drilling performance and shorten the service life of the tool.
There is a tremendous force exerted on the tool/bit at the time of hole break through. Grip the drill firmly and exert care when the bit begins to break through the material.
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