- a shaft or bar the end of which is inserted into a workpiece to hold it during machining.
- a spindle on which a circular saw or grinding wheel rotates.
- the driving spindle in the headstock of a lathe.
Origin of mandrel
1510–20; perhaps akin to French mandrin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for mandrel
The next step would be to turn out a bore and fit a mandrel into it.Practical Mechanics for Boys
J. S. Zerbe
On the inner end of the mandrel put a block (F) of hard wood.Electricity for Boys
J. S. Zerbe
The discs are made by pouring lead round the screw-nose of the mandrel.
The disc is, of course, mounted on the mandrel, and the work on the slide-rest.
Claim—Constructing shells for firearms by forcing the metal into a mould around an internal shell supported on a mandrel.
- a spindle on which a workpiece is supported during machining operations
- a shaft or arbor on which a machining tool is mounted
- the driving spindle in the headstock of a lathe
- British a miner's pick
C16: perhaps related to French mandrin lathe
Word Origin and History for mandrel
"miner's pick," 1510s, of unknown origin; perhaps borrowed from French mandrin, itself of unknown origin. Also applied from 17c. to parts of a lathe or a circular saw.
Online Etymology Dictionary, © 2010 Douglas Harper
- A shaft on which a working tool is mounted, as in a dental drill.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.