Robotic Welding

APM's Colorado machine shop provides robotic welding services as a popular solution to manual metal joining.

Laser marking, also referred to as laser coloration or dark marking, is a precision manufacturing process whereby a focused laser beam of light is used to produce clearly legible machined part identification to fulfill regulations or impart added distinction.

For additional information about laser marking, please read the below information, or contact one of Advanced Precision Machining’s experts.

Laser Marking Machine Interacts

Laser Marking Oxidation Turning

When the laser beam produced by the laser marking machine interacts with the surface of a precision machined part, the process discolors the surface of the material altering its properties or appearance.

The discoloration method produced by laser marking causes oxidation turning the marked part black while leaving the surface of the part intact.


  • Coding (bar codes, lot codes, UID codes, QR codes, etc.)

  • Numbering (serial numbers, batch numbers, VIN numbers, etc.)

  • Logos

  • Lines of text

Types of Mills:

  • Knee mill
  • Bed mill
  • Box mill or column mill
  • C-Frame mill
  • Gantry mill

Knee mill or knee-and-column mill refers to any milling machine whose x-y table rides up and down the column on a vertically adjustable knee. This includes Bridgeports.

This refers to any milling machine where the spindle is on a pendant that moves up and down to move the cutter into the work. These are generally more rigid than a knee mill.

Basic hobbyist bench-mounted milling machines that feature a head riding up and down on a column or box way.

These are larger, industrial production mills. They feature a knee and fixed spindle head that is only mobile vertically. They are typically much more powerful than a turret mill, featuring a separate hydraulic motor for integral hydraulic power feeds in all directions, and a twenty to fifty horsepower motor. Backlash eliminators are almost always standard equipment. They use large NMTB 40 or 50 tooling. The tables on C-frame mills are usually 18″ by 68″ or larger, to allow multiple parts to be machined at the same time.

The milling head rides over two rails (often steel tubes) which lie at each side of the work surface.

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