Mandrel

Definition and stakes

Chambers's Twentieth Century Dictionary…

“ Mandrake, man′drāk, n. a plant of the genus Mandragora, with narcotic properties, once regarded as an aphrodisiac, shrieking when pulled out of the ground.—Mandrag′ora (Shak.) . [L.,—Gr. mandragoras.]
Mandrel, man′drel, n. a bar of iron fitted to a turning-lathe on which articles to be turned are fixed: the axle of a circular saw.—Also Man′dril. [Fr. mandrin; prob. through Low L. from Gr. mandra.]
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Source: Gutenberg

Anonymous,  The turner's companion (1868)

“ When the ring is in this position, it will be perceived that it can only move from side to side, and its centre must always be in the same horizontal line with that of the mandrel. Now screw upon the mandrel the nut, L, fig. 2. The plate, I K, if set exactly opposite the mandrel, will revolve in a circle; but if the centre of the ring be the least in the world on one side of the mandrel, it will revolve in an ellipse. When, therefore, the work is fastened to the screw, W, it is quite as easy to turn an ellipse as on the ordinary lathe to turn a cylinder. ”
Source: Gutenberg

Archibald Williams,  Things To Make

“ Making the Cylinder Slide and Valve.—The cylinder barrel must be perfectly cylindrical and free from any dents. Mandrel-drawn brass tubing, 1/16-inch thick, may be selected. If you cannot get this turned off at the ends in a lathe, mark the lines round it for working to with the aid of a perfectly straight edged strip of paper, 2-13/16 inches wide, rolled twice round the tube. The coils must lie exactly under one another. Make plain scratches at each end of the paper with a sharp steel point. ”
Source: Gutenberg

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