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Overview of CNC Milling Process

HP Precision is a full service job shop dedicated to providing our customers with quality workmanship and personalized service.


CNC milling, or computer numerical control milling, is a machining process which employs computerized controls and rotating multi-point cutting tools to progressively remove material from the workpiece and produce a custom-designed part or product. This process is suitable for machining a wide range of materials, such as metal, plastic, glass, and wood, and producing a variety of custom-designed parts and products.

Like most conventional mechanical CNC machining processes, the CNC milling process utilizes computerized controls to operate and manipulate machine tools which cut and shape stock material. In addition, the process follows the same basic production stages which all CNC machining processes do, including:

  • Designing a CAD model
  • Converting the CAD model into a CNC program
  • Setting up the CNC milling machine
  • Executing the milling operation