Surface Finishing

Surface Finishing for CNC Machined Parts

Professional surface finishing support for CNC machined metal and plastic parts, including anodizing, plating, passivation, polishing, coating and marking.

Intro

Complete Finishing Support for Custom Parts

ZINKO supports surface finishing for CNC machined, molded and fabricated parts. We help review material, finish type, color, texture and drawing notes before production, so the final parts meet both functional and cosmetic requirements.

Surface finishing can be combined with CNC Milling, CNC Turning, Swiss Machining and Wire EDM projects.

Surface-finished CNC machined metal parts

Real Finished Parts

Examples of CNC machined parts with anodizing, plating, polishing, brushing or other finishing requirements.

Black anodized aluminum CNC machined frame with threaded holes — **Black anodized aluminum part**
Black cosmetic finish with exposed machined details.

Brushed circular metal CNC parts with radial surface texture — **Brushed circular metal parts**
Consistent radial texture for cosmetic surface control.

Brass precision machined parts with plated appearance — **Brass precision components**
Small precision parts with gold-tone surface appearance.

Finishing Options

Surface Finishing Options for Custom Parts

Common finishing options for CNC machined metal and plastic parts.

Anodizing

For aluminum parts that need color, appearance and corrosion resistance.

Hard Anodizing

For selected aluminum parts requiring better wear resistance.

Passivation

For stainless steel parts requiring clean and corrosion-resistant surfaces.

Black Oxide

For steel parts requiring a dark finish and light corrosion protection.

Zinc / Nickel Plating

For metal parts requiring protection, appearance or conductivity.

Powder Coating

For parts requiring durable colored coating.

Polishing

For brighter and smoother metal surfaces.

Sandblasting

For uniform matte texture before or after finishing.

Laser Marking

For logos, serial numbers, part numbers or orientation marks.

Material Matching

Materials & Finish Matching

Different materials require different finishing methods. We review material, geometry and end use before confirming the finish.

Aluminum

Clear anodizingBlack anodizingHard anodizingSandblasting

Stainless Steel

PassivationPolishingBrushingLaser marking

Steel

Black oxideZinc platingNickel platingPowder coating

Brass / Copper

PolishingPlatingBrushing

Plastic Components

Silk printingUV printingMarking when applicable

Sheet Metal Parts

Powder coatingPlatingBrushing

Project Flow

How We Handle Finishing Projects

Finishing requirements are reviewed before production and checked before shipment.

Review Requirements

Material, finish type, color, drawings and cosmetic requirements.

Prepare & Finish

Deburring, cleaning, blasting, polishing or coating are arranged as needed.

Inspect & Pack

Finished parts are checked for appearance, damage and key drawing requirements before shipment.

Quality Control

Surface Finish Quality Control

We check finish appearance, color consistency, surface defects, edge condition and key drawing requirements before packing. Please mark critical cosmetic or functional surfaces clearly on the drawing.

Need Surface Finishing for Your Parts?

Send your drawings, material, finish type, color and quantity. We will review the project and provide a practical quote.

Get a Quote