The drill bit, Fig. 72, is tempered quite hard and may be used to bore in metal as well as in wood. As this bit has no spur, it is best to make a "seat" for it. In metal a punch is used; in wood an awl, Fig. 73, will be used.
Gimlet bits, Fig. 74, are used mainly in boring small holes for screws.
Fig. 72. Drill Bit.
Fig. 73. Scribe Awl.
Fig. 74. Gimlet Bit.