Mass-reducing shaping processes shape a workpiece by removing mass/material from it.
Overview of Process
Mass-reducing shaping processes are those that shape a workpiece, and in the process cause it to have a lower mass, most often by removing material.
This is a classification process, not a end-node process. Specifying the detailed end-node process required will produce a better RfD search result.
Todd, Allen and Alting. “Fundamental Principles of Manufacturing Processes”. 1994.