Our Manufacturing Standards

We will strive to achieve and maintain design drawing tolerances unless we agree to other tolerances in your quote.

Workmanship Standards

CNCdoing orders will meet the minimum workmanship standards listed below (as applicable to the process). If your project requires a level of workmanship that exceeds the standards listed below, please clearly outline the requirements in engineering drawings, purchase orders, and/or specifications.

Finished Surfaces Cosmetics

  • Paint coverage on surfaces will be uniform, including adjacent materials of assemblies
  • Finished surfaces will be free of defects including chips, scrapes, or other damage

Mill Steps, Tooling, and Chatter

  • Tool marks on as-milled surfaces will be free of defects including burrs, chatter, tool gauges and will meet surface roughness specifications.
  • Clearly indicated critical surfaces will be free of mill steps and marks across the entire surface.
  • Milled surfaces will meet surface roughness specifications.

Chips, Burrs, and Sharp Edges

  • All exposed edges will be free of burrs, sharp edges, and metal slivers.**
  • **Sheet cut parts will not be deburred unless specified through a selected finish.

Foreign Object Debris (FOD)

  • Surfaces will be free of cutting fluid, metal chips, foreign objects, and other debris.

Threads

  • Threads will be fully formed and cut to specified size and class according to provided drawings.
  • Threads will be free of defects, notable damage, and contamination.

Plated Surfaces

  • Plated surfaces will be uniform, including adjacent surfaces of assemblies.
  • Plated surfaces will be free of machining marks, scratches, pits, protrusions, or any visible bare metal.
  • Some minor defects may be permissible in certain situations if they do not compromise the protective finish.

Weld Joints

  • Weld joints will be finished as specified in the weld callouts of the provided part drawing.
  • Welds without specific requirements will be cleaned to remove slag or other surface contamination.
  • If required, weld joints will not be painted until the welding has been completed and the weld has passed inspection.

Countersinks

  • Countersinks shall be round and made to print specifications and allow the proper designed fit with the mating screw.
  • Countersinks will be free of burrs, chatter, or other tooling defects.

Painted Surfaces

  • Painted surfaces shall be consistent and continuous in the finish.
  • Painted surfaces shall be free of visible machining marks, scratches, abrasions, dust particles, fisheyes, orange peel, or bare metal.
  • Painted surfaces should be reviewed against this standard at a distance of 18″ at 1X magnification.

 

CNC Orientation and Form General Tolerances

Table: Parallelism, Perpendicularity, Cylindricity, Circularity, Flatness, and Straightness over Part Length