Take the live center from the spindle and with a wooden mallet drive the spur deep into the wood.
Never drive the wood onto the live center while in the spindle because serious injury may be done the machine by such practice.
Then replace the live center by taking the stock and center and forcing it into the spindle by a sudden push of the hand.
late 14c., "middle point of a circle; point round which something revolves," from Old French centre (14c.), from Latin centrum "center," originally fixed point of the two points of a drafting compass, from Greek kentron "sharp point, goad, sting of a wasp," from kentein "stitch," from PIE root *kent- "to prick" (cf. Breton kentr "a spur," Welsh cethr "nail," Old High German hantag "sharp, pointed").
Figuratively from 1680s. Meaning "the middle of anything" attested from 1590s. Spelling with -re popularized in Britain by Johnson's dictionary (following Bailey's), though -er is older and was used by Shakespeare, Milton, and Pope. Center of gravity is recorded from 1650s. Center of attention is from 1868.
1590s, "to concentrate at a center," from center (n.). Related: Centered; centering. Meaning "to rest as at a center" is from 1620s. Sports sense of "to hit toward the center" is from 1890. To be centered on is from 1713. In combinations, -centered is attested by 1958.
center cen·ter (sěn'tər)
A point or place in the body that is equally distant from its sides or outer boundaries; the middle.
A group of neurons in the central nervous system that control a particular function.