CNC Drilling Services

Finishing Options for CNC Drilling

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  Bead blasted

  

  As machined

  

  Bead blasting

  Bead blasting involves spraying a pressurised stream of tiny beads of media, plastic or glass beads, from a nozzle onto the surface of the part. This removes the burrs and imperfections, leaving a smooth finish.

  Final result:

  • Slightly grainy in the touch
  • Uniform, matte or satin-like appearance
• Blue anodising type II (3D render, aluminium shown)

  Gold anodising type II (3D render, aluminium shown)

  Green anodising type II (3D render, aluminium shown)

  Orange anodising type II (3D render, aluminium shown)

  Red anodising type II (3D render, aluminium shown)

  Yellow anodising type II (3D render, aluminium shown)

  Anodising, purple

  Black anodising type II (3D render, aluminium shown)

  Clear anodising type II (3D render, aluminium shown)

  Anodising (type II)

  Type II anodise provides increased corrosion resistance and can be used as a base for paint and other finishes.

  Notes:

  • Involves using dyes to affect the part’s surface colour
  • Type II coatings are susceptible to wear and may bleach or fade under prolonged direct sunlight
  • Possibility of requesting custom colours (RAL)

  Available colors:

  • Black
  • Blue
  • Gold
  • Green
  • Orange
  • Red
  • Yellow
  • Purple
  • Grey
  • Natural
  • Custom colour (RAL)
• Clear hardcoat anodising type III (3D render, aluminium shown)

  Grey hardcoat anodising type III (3D render, aluminium shown)

  Black hardcoat anodising type III (3D render, aluminium shown)

  PTFE hardcoat anodising type III (3D render, aluminium)

  Hardcoat anodising (type III)

  Type III hardcoat anodise produces a thicker layer of standard anodising, making it more durable and wear-resistant. Can be used as a base for paint and other finishes.

  Notes:

  Colours tend to come out slightly dark due to the thickness.

  Available colors:

  • Black
  • Grey
  • Natural
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  Powder coating

  Provides a continuous, protective colour finish on parts using evenly applied, heat-cured paint. The finish is usually tougher and even compared to conventional painting.

  Notes:

  Metals like aluminium and steel can be efficiently coated with polymer powders

  Available colors:

  • Black
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  Electropolishing

  An electrochemical process that cleans steel parts to reduce corrosion and improve appearance by making the metal brighter.

  Final result:

  • Reduced corrosion
  • Brighter appearance
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  Passivation

  A colorless coating that improves corrosion resistance for 200 and 300 series and precipitation hardened corrosion-resistant steels by removing free iron from the surface.

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  Electroless nickel plating

  Electroless nickel plating provides a uniform nickel coating, which offers protection from corrosion, oxidation, and wear on irregular surfaces.

  Final result:

  • Protection from corrosion, oxidation and wear on irregular surfaces
  • Brighter appearance
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  Gold plating

  Gold Plating provides good corrosion and tarnish resistance. Gold has low contact resistance, excellent conductivity, and solderability.

  Final result:

  • Gold-like appearance
  • Increased corrosion and tarnish resistance
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  Black oxide

  Black oxide is a type of conversion coating for ferrous materials, such as steel and stainless steel, which blackens the top layer of the material. It can be used to reduce reflection and glare, as well as provide some additional corrosion resistance without affecting part dimensions.

  Available colors:

  • Black
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  Zinc coating / Galvanising

  Zinc plating involves the electrodeposition of a thin coating of zinc metal onto the surface of another metal object, known as a substrate.

  Notes:

  The zinc coating creates a physical barrier that prevents rust from reaching the underlying metal surface.

  Final result:

  • Increased corrosion resistance
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  Annealing

  The annealing process involves the heating of a metal to or near the temperature at which recrystallisation begins without change in the stresses. After heating, the metal is cooled to room temperature in the oven or put in the sand.

  Final result:

  • Improved cold working capacity of the metal
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  Case-hardening (Carburising)

  A heat treatment process which includes hardening the surface of metal while allowing the metal underneath to remain soft. As the name implies, carburising is inducting carbon or nitrogen into low-carbon alloys at elevated temperatures so that the hardenability increases.

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  Tempering

  A heat treatment method that is mainly dedicated to reducing the amount of hardness of metals. It involves heating the metal to a temperature below the critical point. The temperature is adjusted depending on the amount of hardness that needs to be reduced and it varies depending on the metal type as well.

  Final result:

  • Reduced hardness
  • Increased elasticity and plasticity
  • Reduced yield and tensile strength
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  Through hardening

  Through hardening, also known as quench hardening, is a heat treatment process used to increase the hardness and strength of a material by heating it to a high temperature and then rapidly cooling it, usually by immersing it in a quenching medium such as oil, water, or air.

  Final result:

  • Hardened surface layer that is resistant to wear, abrasion, and deformation
  • The core remains tough and ductile
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  Custom

  If you select a custom finish in the Instant Quoting Engine it will require manual review. Manual quoting usually 1-2 business days.

  Notes:

  Submitting for manual review with a custom request does not guarantee a quote.