Surface Finishing Service

Surface Finishing Service

Find our selection of surface finishing services. Get your metal and plastic parts CNC machined and apply a secondary finishing. CNC machined parts bead blasted, anodised or powder coated. 

cnc machined part

Surface Finishing Capabilities

Post-manufacturing secondary finishing service. Using Geomiq you can directly apply a secondary finish to your parts, Simply select the required finish in the drop-down menu during your part upload.

  • As Machined
  • Blasting
  • Anodising
  • Hard Anodising
sample cnc part for as machined surface finish

As Machined

Straight off the machine with no additional treatment.

Suitable for: Most Materials 

Additional Cost: None 

Most surface finishes either add material to coat, or remove material to smooth. Coming straight from the machine the part retains the accuracy of cnc, however also shows the marks from cutting. In some cases this can be accepted, and in others desirable.
The standard roughness off a machined part is 3.2 μm (0.0032mm)
With further operations roughness can be reduced to 0.4 μm (0.0004mm) This will add cost to the final part.

sample cnc part for blasting surface finish

Blasting Service

(Bead or various abrasive grades.)

Suitable for: Most Materials

Additional Cost: Low/Mid 

Blasting smooths out the surfaces of the part, removing the tool marks. It is
normally used where there is an aesthetic requirement, and sometimes as a
pretreatment for other finishes or coatings.

The blasting process is abrasive so removes material – it will have affect small
details and edges and reduce the surface accuracy. Critical surfaces and features can be masked to avoid this.
Bead blasting is widely used on aluminium before anodise and gives a high
quality cost effective finish.

sample cnc part for anodizing surface finish

Anodising service

Colour or clear (natural material colour)

Suitable for: Aluminum, Titanium 

Additional Cost: Low/Mid 

Anodising is a process where the part is immersed in an electrolytic solution
and electrical charge is passed through. This forms a very thin (8-25 μm) hard
oxide layer on the surface which makes the part more durable and resistant to
corrosion. The pores in the oxide surface also allow better adhesion for paints
and coatings.By adding pigment to the solution the final part colour can also be changed as part of the process.
Often the part is bead blasted, or polished before anodising to unify the surface and give higher visual quality.
Parts can be anodised, machined back, then anodised again allowing for different finishes and colours

sample cnc part for Hard Anodising surface finish

Hard Anodising Service

Clear or Dark Colour.

Suitable for: Aluminium

Additional Cost: Low/Mid

Similar to anodising the part is immersed in sulphuric acid with an electric charge. This results in a thicker (25 to as high as 150 μm ) oxide layer which is very durable and protects the aluminium from corrosion and damage.

Hard anodising appearance is harder to control and is usually limited to dark
colours. It is often chosen for its durabilty in engineering situations.

Get Your FREE Quote!

Drag and Drop your 3D CAD Files into onto the platform. Select the materials directly from the drop down menu, apply a secondary finish or leave it as machined. Using the tolerancing feature apply your part specifications without the need to upload an engineering Drawing. 

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