Red Seal Machinist Practice Exam 2026 – All-in-One Comprehensive Guide to Exam Success!

Milling is classified as a material removal method because it involves the use of rotary cutters to remove material from a workpiece. This subtractive manufacturing process shapes the workpiece by cutting away material until the desired shape and dimensions are achieved. The milling machine can perform various operations such as face milling, slot cutting, and contouring, making it a versatile method in machining.

In contrast, casting and molding are formative processes where material is poured into a mold to take the desired shape, involving no removal of material from an existing piece. Bending, on the other hand, alters the shape of a workpiece without removing any material; instead, it plastically deforms the material along a bend line. Therefore, milling distinctly stands out as a process that focuses on removing material to create precision machined parts.