Red Seal Machinist Practice Exam 2025 - Free Machinist Practice Questions and Study Guide

A milling machine is designed to remove material from a workpiece using rotary cutters. This process allows for the creation of complex shapes and precise dimensions through the cutting action of the tool against the material. The milling machine can operate in various modes, such as face milling, where the cutter removes material from the surface, or peripheral milling, where the cutter engages the workpiece at the side. This versatility makes it an essential machine tool in manufacturing and machining processes.

The other functions mentioned in the other options do not align with the primary purpose of a milling machine. While heat treatment is crucial in metallurgical processes, it involves altering the physical and sometimes chemical properties of materials, which is not related to a milling operation. Measuring the dimensions of a workpiece typically requires tools such as calipers and gauges, not a milling machine. Welding is a completely different process where materials are joined together using heat and sometimes filler material, which is outside the scope of what a milling machine is designed for.