Anodizing & Surface Finishing for CNC Parts

Anodizing and surface finishing for CNC machined parts, arranged together with the machining.

What Is Surface Finishing?

Surface finishing encompasses various post-machining processes that enhance a part's appearance, corrosion resistance, wear resistance, or electrical properties.

We offer over 10 finishing options including anodizing (Type II & III), electroplating, powder coating, bead blasting, passivation, and mirror polishing.

Available Finishes

As Machined

Standard machined surface with tool marks visible. Cost-effective for non-cosmetic parts.

Surface RoughnessRa 1.6 - 3.2μm

Bead Blasted

Uniform matte finish created by blasting with glass beads. Hides tool marks.

Surface RoughnessRa 1.0 - 3.0μm

Anodized (Type II)

Oxide layer for corrosion resistance and color options. Ideal for aluminum parts.

Surface RoughnessRa 0.8 - 1.6μm

Hard Anodized (Type III)

Thick, hard oxide layer for extreme wear and corrosion resistance.

Surface RoughnessRa 0.4 - 1.0μm

Powder Coated

Durable color coating applied electrostatically. Wide range of colors and textures.

Surface RoughnessRa 1.0 - 3.0μm

Electroplated

Nickel, chrome, or zinc plating for conductivity, corrosion resistance, or appearance.

Surface RoughnessRa 0.2 - 0.8μm

Mirror Polished

Multi-step polishing to achieve mirror-like surface finish for optical or decorative use.

Surface RoughnessRa 0.05 - 0.2μm

Passivated

Chemical treatment to enhance corrosion resistance of stainless steel parts.

Surface RoughnessN/A

Black Oxide

Dark finish for steel parts providing mild corrosion resistance and reduced light reflection.

Surface RoughnessRa 0.8 - 1.6μm

Applications

Aerospace

Automotive

Medical

Consumer Products

Electronics

Marine

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Need Surface Finishing?

Contact us for finishing options and pricing.

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Anodizing for CNC machined aluminum parts

We offer surface finishing including anodizing, arranged together with the machining. Anodizing protects aluminum parts against corrosion and wear and gives them their color — the finish you see on most bicycle hubs and components.

Because the anodized layer adds a little thickness, tell us which bores, threads and fits must stay bare or need allowance, and the color you need.

Ordering machining and finishing together

One supplier for both means one point of contact, and allowances and masking can be planned together with the machining. Read our guide to anodized aluminum CNC parts for design tips.

Send a STEP model and a PDF drawing through our quote form, or email them to a0937121023@gmail.com. Tell us the material, finish, quantity and destination country, and we will reply with a quote and design feedback.

Parts we have machined

Browse custom parts →
CNC machined aluminum bicycle anodized lock ring
Anodized Lock Ringaluminum
CNC machined aluminum hub shell
Hub Shellaluminum
CNC machined aluminum hub body
Hub Bodyaluminum
CNC machined aluminum freehub body
Freehub Bodyaluminum
CNC machined aluminum hub column
Hub Columnaluminum
CNC machined aluminum hub flange
Hub Flangealuminum
CNC machined steel bicycle bushing
Steel Bushingsteel
CNC machined steel bicycle lock ring
Lock Ringsteel
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