Proper Use of Chisels and Bits of Mortising and Boring Equipment

In certain types of construction, dowel pins are used for joints and it is necessary to bore holes accurately for inserting the dowel pins. The problem that persists is to bore holes that fit the dowel pins properly. Bits can be furnished with screw points or brad points. Screw points help feed the tool into the wood. Bits or drills having brad points require that the operator or the feeding mechanism of the machine apply the pressure required to make the bits or drills feed into the wood. An advantage of drills with a brad point is the fact that the cutting diameter is maintained more or less the entire length of the twist and can be sharpened back further than on a double cutter bit with spurs and screw point. If straight holes are required, it is advisable to use a ship auger. This bit will bore easily, and will not follow the grain of the wood.

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