Group 10 Protolabs and 3D Hubs are joining forces Read More
Get instant quote
blue anodizing

Surface Finishing Service

Your one-stop shop for manufacturing and surface finishing. Get your metal and plastic parts CNC machined and bead blasted, anodized, or powder coated in as fast as 5 days.

Get instant quote Our capabilities

One-stop shopMetal & plastic10-15 day lead time

Our surface finishing capabilities

Use 3D Hubs as your one-stop solution for both manufacturing and surface finishing of your custom CNC machined parts, reducing the risk of production.

Do you need lettering logos or custom tags? Take a look at our part marking service here.

Choose the right finish for your material

Different surface finishes can be applied to different materials. Find below a quick cheat sheet of surface finish and material compatibility.

Name Material compatibility Rough price increase*
Smooth machining (1.6 Ra μm/64 Ra μin) All plastics and metals +10%
Bead blasting All metals +5%
Powder coating All metals +15%
Anodizing clear (type II) Aluminum alloys +15%
Anodizing color (type II) Aluminum alloys +20%
Anodizing hardcoat (type III) Aluminum alloys +30%
Brushing + Electropolishing (0.8 Ra μm/32 Ra μin) All metals +15%
Black oxide Stainless steel and copper alloys +10%
Chromate conversion coating Aluminum and Copper alloys +10%
Brushing All metals +5%

*Price increase estimates are based on one-off parts. Bulk pricing also applies to surface finishes.

Our standard surface finishes

Here is a list of standard surface finishes. For custom surface finishes such as electroplating or polishing, please contact

As machined

Our standard finish is “as machined” finish. It has a surface roughness of 3.2 μm (126 μin). All sharp edges are removed and parts are deburred. Tool marks are visible.

Smooth machining (1.6 Ra μm/64 Ra μin)

A finishing CNC machining operation can be applied to the part to reduce its surface roughness. The standard smoothing surface roughness (Ra) is 1.6 μm (64 μin). Machine marks are less evident but still visible.

Bead blasting

Bead blasting adds a uniform matte or satin surface finish on a machined part, removing the tool marks. This is used mainly for visual purposes and comes in several different grits which indicate the size of the bombarding pellets. OUr standard grit is #120.

Requirement Specification
Grit #120
Color Uniform matte of raw material color
Part masking Indicate masking requirements in technical drawing

Bead Blasting + Anodizing color or clear (type II)

Type II anodizing is mainly used to produce parts with a uniform, aesthetically pleasing surface and provides good corrosion and limited wear resistance. Parts are bead blasted to #120 grit prior to anodizing.

Requirement Specification
Thickness 8 - 12 μm (clear), 4 - 8 μm (color)
Color Black, clear or any RAL code or Pantone number
Part masking Indicate masking requirements in technical drawing

Anodizing hardcoat (type III)

Type III anodizing provides excellent corrosion and wear resistance, suitable for functional applications.

Requirement Specification
Thickness 50 - 125 μm
Color Black or clear
Part masking Indicate masking requirements in technical drawing

Powder coating

Powder coating is a strong, wear-resistant finish that is compatible with all metal materials and can be combined with a bead blasting to create parts with smooth and uniform surfaces and excellent corrosion resistance.

Requirement Specification
Thickness 18 - 72μm
Color Black or any RAL code or Pantone number.
Part masking Indicate masking requirements in technical drawing.


Electropolishing is an electrochemical process used to polish, passivate and deburr metal parts. It is useful to reduce surface roughness.

Requirement Specification
Color Natural metal color.
Part masking Indicate masking requirements in technical drawing.

Black oxide

Black oxide is a conversion coating used to improve corrosion resistance and minimize light reflection.

Requirement Specification
Color Black.
Part masking Indicate masking requirements in technical drawing.

Chromate conversion coating (Alodine/Chemfilm)

Chromate conversion coating is used to increase the corrosion resistance of metal alloys while maintaining their conductive properties.

Requirement Specification
Color Clear
Part masking Indicate masking requirements in technical drawing.


Brushing is produced by polishing the metal with grit resulting in a unidirectional satin finish. Not advisable for applications where corrosion resistance is required.

Requirement Specification
Surface roughness 0.8 - 1.5 μm
Grit #80-120
Part masking Indicate masking requirements in technical drawing.
Matt Farr, UK Strategic Account Manager Matt Farr UK Strategic Account Manager
Jennifer Kaari, US Strategic Account Manager Jennifer Kaari US Strategic Account Manager
David Nguyen, EMEA Sales Engineer David Nguyen EMEA Sales Engineer

For businesses of all sizes

Get in touch with our team to access these services:

  • Add 3D Hubs as a vendor
  • ISO 9001, material certifications, test reports and full dimensional reports
  • Non-disclosure agreements
  • Urethane casting and part marking
  • Sample verification program (learn more)
  • Dedicated account manager

Call us directly on , or email us at

Get your parts machined and finished in as fast as 5 days

Upload your designs, select your material and surface finish and get your parts into production in less than 5 minutes.

Get instant quote