The machining process of using rotary cutters (burs) to remove material from a workpiece by advancing it (or feeding) at an angle with the axis of the tool. It covers a wide variety of different operations and machines, on scales from small individual parts to large, heavy‐duty milling operations. It is one of the most commonly used processes to fabricate dental restorations with high precision. Mills have multiple axes (e.g., 3‐axis, 4‐axis, 5‐axis) that determine their ability to create final detail and complex geometries with undercuts, concave contours, and holes.