Precision Surface Finishing Services
Transform your CNC machined parts with professional anodizing, plating, powder coating, and custom finishes. One-stop manufacturing from machining to final finish.
12+ Years of Experience
Anodizing • Plating • Coating • Polishing
Our Surface Finishing Capabilities
From standard deburring to advanced coatings, we provide comprehensive finishing solutions for aluminum, steel, stainless steel, and exotic alloys.
Related processes: features a cutter cannot reach are cut on our wire EDM machines; tight shaft and bore fits, and finishes finer than milling can hold, come from CNC grinding. If you want the geometry proven before a production run, start with rapid prototyping and low-volume production.
Standard Finishing
Essential surface treatments to improve part quality and prepare for further processing.
- Deburring & Edge Breaking
- Glass Bead Blasting
- Aluminum Oxide Blasting
- Vibratory Tumbling
- Laser Marking
- Silk Screen Printing
Aesthetic Finishing
Enhance appearance with decorative coatings, colors, and mirror-like surfaces.
- Type II Anodizing (Multi-color)
- Type III Hardcoat Anodizing
- Chrome Plating
- Nickel Plating
- Powder Coating
- Wet Painting
- Mirror Polishing
Functional Finishing
Engineered coatings for corrosion resistance, wear protection, and specialized properties.
- Electroless Nickel Plating
- Zinc Plating
- Passivation (Stainless Steel)
- Chemical Conversion Coating
- Black Oxide
- Phosphate Coating
- PVD Coating
Material & Finish Compatibility
Not all finishes work with all materials. Use this guide to find the perfect match for your project.
| Finish Type | Aluminum | Steel | Stainless Steel | Copper/Brass | Titanium |
|---|---|---|---|---|---|
| Anodizing (Type II/III) | Excellent | - | - | - | Limited |
| Electroless Nickel | |||||
| Chrome Plating | Excellent | - | |||
| Powder Coating | |||||
| Passivation | - | - | Required | - | - |
| Electropolishing | - | - | Excellent | ||
| Black Oxide | - | - | - | ||
| Zinc Plating | - | Excellent | - | - | - |
Other materials: see the dedicated pages for brass and copper, carbon and alloy steel, and engineering plastics.
Our Finishing Process
From raw machined parts to finished products, we ensure quality at every step.
Part Inspection
Incoming parts are inspected for dimensional accuracy and surface condition.
Pre-Treatment
Cleaning, degreasing, and surface preparation to ensure coating adhesion.
Surface Treatment
Application of anodizing, plating, coating, or other specified finish.
Quality Control
Thickness testing, adhesion testing, and visual inspection.
Packaging
Protective packaging to preserve finish quality during shipping.
Industries We Serve
Our surface finishing solutions meet the demanding requirements of diverse industries.
Medical Devices
Electropolishing and passivation for surgical instruments and implants, with material traceability and inspection reports on request.
Industrial Automation
Hard anodising, wear-resistant coatings and corrosion protection for moving parts, jigs and fixtures on automated lines.
Aerospace
Hardcoat anodizing for wear resistance, chemical conversion coatings, and precision passivation for flight-critical parts.
Electronics
Conductive finishes, EMI shielding coatings, and aesthetic anodizing for consumer electronics enclosures.
Industrial
Heavy-duty powder coating, chemical-resistant plating, and protective finishes for machinery and equipment.
Robotics
Lightweight anodized aluminum, hardcoat finishes for moving parts, and precision coatings for optical components.
Quality Assurance
We maintain the highest standards through rigorous testing and documented processes.
Consistent Results
Our quality management system ensures consistent, repeatable results on every order.
Advanced Testing
Coating thickness gauges, adhesion testers, salt spray testing, and visual inspection.
Process Control
Monitored bath chemistry, temperature control, and documented process parameters.
First Article Inspection
Detailed FAI reports for new parts, ensuring your specifications are met before full production.
Protective Packaging
VCI bags, foam inserts, and custom packaging to prevent damage during transit.
Traceability
Complete lot tracking from raw material to finished part for full accountability.
Technical Specifications
Detailed specifications to help engineers specify the right finish for their application.
Not sure which roughness to call out? See CNC surface finish: Ra values explained.
Anodizing Specifications
| Parameter | Type II (Decorative) | Type III (Hardcoat) |
|---|---|---|
| Coating Thickness | 5-15 microns (0.0002"-0.0006") | 25-75 microns (0.001"-0.003") |
| Available Colors | Clear, Black, Blue, Red, Gold, Green | Black, Dark Bronze (limited) |
| Hardness | 200-300 HV | 400-500 HV |
| Corrosion Resistance | Good | Excellent |
| Wear Resistance | Moderate | Excellent |
| Dimensional Change | ~50% penetration, 50% growth | ~50% penetration, 50% growth |
Plating Specifications
| Plating Type | Thickness Range | Key Benefits | Typical Applications |
|---|---|---|---|
| Electroless Nickel | 5-50 microns | Uniform coverage, corrosion resistance | Valves, pumps, molds |
| Chrome Plating | 0.5-50 microns | Hardness, wear resistance, decorative | Automation, hydraulics |
| Zinc Plating | 5-25 microns | Corrosion protection, sacrificial | Fasteners, brackets |
| Passivation | 0.01-0.1 microns | Corrosion resistance, clean surface | Medical, food grade |
Frequently Asked Questions
Detailed specifications to help engineers specify the right finish for their application.
What is the typical lead time for surface finishing?
Standard finishing services typically add 2-3 days to your machining lead time. Complex finishes like hardcoat anodizing or electroless nickel may require 3-5 additional days. Rush services are available for urgent orders.
How do I specify surface finish requirements?
You can specify finishes in your CAD files, technical drawings, or when requesting a quote. Include the finish type (e.g., “Type II Anodize, Black”), any required specifications (MIL-A-8625, AMS 2469), and critical dimensions that may be affected by coating thickness.
Will surface finishing affect part dimensions?
Yes, most finishes add material thickness. Anodizing typically grows 50% outward and penetrates 50% into the material. Plating adds material to all surfaces. We can machine parts undersized to accommodate coating thickness, or you can specify critical dimensions that must be maintained post-finishing.
What is the difference between Type II and Type III anodizing?
Type II (decorative) anodizing creates a thinner coating (5-15 microns) suitable for cosmetic applications and offers good corrosion resistance. Type III (hardcoat) anodizing produces a much thicker, denser coating (25-75 microns) with exceptional wear resistance and hardness, ideal for industrial and aerospace applications.
Can you supply RoHS and REACH documentation for finishes?
Yes. We can supply RoHS and REACH documentation for your finishes — tell us the requirement when you request a quote and we will confirm it with the finishing supplier before production. Restricted-substance options such as trivalent chromium plating and lead-free anodizing are available.
Can you match specific color requirements?
For anodizing, we offer standard colors (clear, black, blue, red, gold, green). Custom colors can be matched with minimum order quantities. For powder coating and wet painting, we can match any RAL or Pantone color. Please provide a color sample or specification for best results.
Ready to Finish Your Parts?
Get an instant quote for CNC machining with professional surface finishing. Upload your CAD files and specify your finish requirements.
On packaging lines the finish usually matters on product and film contact faces: see CNC machining for packaging machinery.