knurl

Interior indulgence comes courtesy of Aston’s talented craftspeople, who create wood and composite marquetry, knurl metal knobs, and handily “brogue” leather—piercing it in a constellation pattern, as on a wingtip shoe, to allow subtle sub-dermal contrasting colors to come through.

If the knurling is to be carried along the work to a greater length than the thickness of the knurl wheels, the lathe slide rest is slowly traversed the same as for a cutting tool.

The knurling is done by two knurls A and B having teeth or ridges which incline to the right on one knurl and to the left on the opposite knurl, as shown by the end view.

To prevent forming a double set of projections, feed the knurl in with considerable pressure at the start, then partially relieve the pressure before engaging the power feed.

These are mounted in a revolving holder which not only serves to locate the required set of knurls in the working position, but enables each knurl to bear against the surface with equal pressure.