Question

____________________ are ideal for drilling large diameter and deep holes in wood or thick man-made boards.

(a) Wood auger bits

(b) Masonry bits

(c) Spur point bits

(d) Countersink bits

This question was addressed to me in my homework.

This intriguing question originated from Drilling and Road Making Equipments topic in section Construction Equipments of Construction & Building Materials

Answer 1

The correct option is (a) Wood auger bits

To explain I would say: Generally a auger bit should only be used in hand brace. The single spur cuts and defines the edge of the hole while the chisel like cutting edge remove the waste within the previously cut circle. The threaded centre bites into the wood and pulls the bit into the timber.