Machinating p. pr. & vb. n. : of Machinate

Example:


Taxonomy
workpiece, cutting tool, feeds, cuts, cutting edges, depths, machine shop, work surface, machine tool, shape, cutting fluid, metal, chip, lathes, milling, surface finish, hole, finished product.

Defination from the web:
machining, one of the most important material removal methods, is a collection of material-working processes in which power-driven ... The three principal machining processes are classified as turning, drilling and milling. ...