Finishing
Anodising for aluminium parts and inserts
Grows a hard oxide layer on aluminium. It suits metal parts and inserts; plastic prints take other finishes.
- Unchanged
- Core strength of the aluminium
- Strength
- Unchanged
Finish profile
Properties added
- Surface finishMatte to satin; keeps the base texture
- StrengthCore unchanged; surface is harder
- Water resistanceCorrosion resistant once sealed
- Chemical resistanceBetter corrosion resistance
- Wear / abrasionHard surface; hard anodise goes further
- Colour / lookDyed colours, sealed in
- Electrical conductivitySurface is electrically insulating
Trade-offs
- Dimensional changeOxide grows into and out of the surface
- Lead-time impactSpecialist process step
Typical values on a 0 to 4 scale.
Suitable materials
- Aluminium alloysSuitable
- Titanium, magnesiumQuoted per part
Anodising specification
| Applies to | Aluminium parts, inserts, brackets and partner-supplied metal |
|---|---|
| Allowance | Account for oxide growth on tight fits and threads |
| Route | Quoted per part |
Anodising FAQ
Can you anodise a 3D printed plastic part?
Anodising grows an oxide layer from the metal itself, so it suits aluminium and a few other metals. Plastic prints take painting, dyeing or coating instead.
Where does it fit with 3D printing?
On aluminium brackets, inserts and machined parts that go into a printed assembly.
Does anodising change dimensions?
Slightly. The oxide grows into and out of the surface, so allow for it on tight fits and threads.
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Related guides
Process pages: FDM 3D printing, SLA 3D printing, SLS 3D printing. Material data: 3D printing materials.
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