1. The keyway milling cutter cannot process the plane, while the end mill can process the plane.
2. The keyway milling cutter is mainly used for processing keyway and groove, and the keyway milling cutter is very useful for milling keyway. For example, a 6MM end mill and a keyway milling cutter 6MM are more likely to be slotted than a 6MM end mill, and the end mill is easy to break, while the keyway milling cutter can pass through it in one go.
3. The cutting amount of the keyway milling cutter is larger than that of the end mill.
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