End Mill Bits End Mill Cutter RS ComponentsThe end mill removes material by their movement within the milling machine or from the cutter s shape The number of flutes spirals on the end mill give different results 2 flutes allow maximum space for chip ejection and are used for general milling operations 3 flutes is an excellent choice for slotting it has a larger cross section and is used in general milling operations 4 5 6