Spool

A carrier for the safe transport of endless material, wound layer by layer; its minimal inner and maximal outer diameters cause differences in speed and in curvature across the wound material.
Photograph of a wire spool with flanged sides and a spoked core, used for transporting endless material wound in layers.

Spools are used for the safe transportation of endless material. The material is wound onto the spool layer by layer so that it is difficult for individual windings to slip. Spools have a minimal (inner) and a maximal (outer) diameter. This has two important consequences: a difference in speed and a difference in curvatures.

See Also

Adapted from "We do it straight" — Wire Straightening, p. 147 (ISBN 3-00-005897-4).

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