Advanced Precision Machining

Advanced Precision Machining provides unparalleled customer satisfaction. Call us today at 303.776.1910.

CNC Turning

Advanced Precision Machining's fully certified machinists provide state-of-the-art turning, milling, prototype development and production in our Longmont machine shop. We feature the latest CNC Mills and CNC Lathes to cut steels, composite materials, exotic metals, aluminum, and plastics to suite your needs.

Since opening in 2005, Advanced Precision Machining has tripled in size and we continue to grow. Contact our machine shop in Longmont today for a free quote or consultation. We will be happy to discuss any turning, milling, prototype development and production project with you. 

For additional information about turning, we invite you to read the below information or to contact one of our certified machining experts.

Turning is the process whereby a single point cutting tool is parallel to the surface. It can be done manually, in a traditional form of lathe, which requires continuous supervision by the operator, unless an automated computer-controlled system is used. This type of machine tool is referred to as a computer numerical control (CNC).

When turning, a piece of material (wood, metal, plastic or stone) is rotated and a cutting tool is traversed along two axes of motion to produce precise diameters and depths.CNC Turning - Longmont Machine Shop Turning can be either on the outside of the cylinder or on the inside (also known as boring) to produce tubular components to various geometries.

The turning processes are typically carried out on a lathe, considered to be the oldest machining tool. The various processes of turning can produce vast shapes of materials such as straight, conical, curved, or grooved. In general, turning uses simple single-point cutting tools.

Turning Operations

  • Turning: The most basic machining process. A part is rotated while a single-point cutting tool is moved along the axis of rotation.
  • Hard turning: Similar to rough grinding; a part is has a high hardness rating and must be heated prior to turning.
  • Facing: Involves moving the cutting tool at right angles to the axis of rotation.
  • Parting: A process used to create deep grooves which will remove a completed component from its parent stock.
  • Grooving: Grooves are cut to a specific depth by a form tool.
  • Boring: The machining of internal cylindrical forms.
  • Drilling: Used to remove material from the inside of a workpiece.
  • Threading: Screw heads can be turned using an appropriate cutting tool.


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