Brace Shank
This shank was common before 1850, and is still in production. At first, the tapered shank was just rammed into a square hole in the end of the drill. Over time, various chuck designs have been invented, and modern chucks can grasp and drive this shank effectively.
- Easy to make in a forge
- Very wide tolerances allowable (not very precise)
- Moderate torque transmission but without the slipping possible with round shanks
- Appropriate chuck required
Read more about this topic: Drill Bit Shank
Famous quotes containing the word brace:
“Let us therefore brace ourselves to our duties, and so bear ourselves that if the British Empire and its Commonwealth last for a thousand years, men will still say, “This was their finest hour.””
—Winston Churchill (1874–1965)