Differentiate between Counter Sinking and Counter Boring

Differentiate between Counter Sinking and Counter Boring Points : Differentiate between Counter Sinking and Counter Boring, comparison between counter sinking and counter boring Counter Sinking Counter sinking is method of making a cone shaped increase of end of a hole to provide is recess for a plane head screw and counter sunk rivet intense on the hole. Instrument use for counter sinking is known a counter sink, common countersink contain 60°, 82° or 90° fixed angle and cutting edges of tool are shaped at the contraction face.

Counter Boring Counter boring is method of increase end of a hole cylindrically. Enlarged holes form a square bear by the strange hole. It’s necessary in a few cases to have the head of bolts studs and pins. Instrument use for counter boring is known counter bore. Counter bore is set by straight or tapered shank to fit in drill spindle and cutting edge may have straight or also curved teeth.