Using drill bits
Ensure the bit size and type suits the material being drilled and the requirements for the pilot or clearance hole. The bit should be straight and tight in the chuck.
Types of drill bits
■ TWIST BITS have a cone-shaped cutting point and are suitable for various materials.
■ MASONRY BITS have a hardened tungsten carbide point.
■ BRAD POINT BITS have a sharp centre point for accurate hole positioning in timber.
■ SPADE BITS are flat with cutting spurs on the edges for timber.
■ MULTI-CONSTRUCTION BITS are ideal for drilling one hole through a combination of materials.
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