Exchangeable-head milling tools consist of a shank or holder that accepts detachable cutting heads. The cutting heads can be swapped out for new heads of different styles without removing the shank or holder from the machine, allowing one tool to be used for multiple milling tasks. Engraving mill heads engrave images and text onto workpieces. Exchangeable ball end mill heads mill complex shapes without sharp corners or create round-bottomed slots and pockets. Exchangeable chamfer end mill heads form a chamfered or beveled edge. Exchangeable corner-rounding end mill heads create a rounded outside edge. Exchangeable slotting and slitting cutter heads have a wide, flat head that makes slots or slits. Exchangeable square end mill heads create a flat-bottomed, square-shaped groove. Exchangeable-head milling tools require fewer tool changes than solid tools in high-volume metalworking and fabrication applications with high speeds, high feeds, and difficult-to-machine materials.