High Efficiency Milling (HEM) gets described as 'faster roughing' often enough that the actual mechanics behind it get lost. HEM isn't just running the same toolpath faster — it's a different relationship between radial engagement, axial depth, and feed rate that lets a tool remove more material with less wear than a conventional roughing pass. Understanding why it works is what makes it possible to run Daxer's HEM series tools at their intended parameters instead of leaving performance on the table.