Custom Aluminum Anodizing Services for CNC Machined Parts
Type II and Type III anodizing for prototypes and production components. Coordinate CNC machining and finishing with one manufacturing partner.
MachCNCMaster provides custom aluminum anodizing for machined components that require surface protection, wear resistance, or a specified appearance. Send us your drawings and requirements for an engineering review.
Aluminum Anodizing Options for Custom Parts
At MachMaster, we operate our own anodizing workshop, giving us full control over quality, lead time, and process consistency. Whether you’re seeking enhanced surface protection, color customization, or industrial-grade durability, our anodizing services cover a wide range of functional and aesthetic needs.
Type II – Standard Anodizing
The most common anodizing process, ideal for general-purpose aluminum surface treatment. Type II creates a thin oxide layer that is dye-absorbent, corrosion-resistant, and visually appealing—perfect for consumer products and decorative parts.
✔ Features: Thin film, colorable, vibrant finish
✔ Applications: Consumer electronics, aluminum accessories, and general-purpose CNC components.
Type III – Hard Anodizing
Designed for parts requiring extreme durability, abrasion resistance, and insulation. Type III anodizing produces a much thicker and denser oxide layer under controlled conditions, making it ideal for industrial and mechanical components.
✔ Features: Thick film (up to 30µm), high hardness, superior corrosion and wear resistance
✔ Applications: industrial components, tooling, fixtures, and parts exposed to friction or repeated contact.
Alodine/ Chemical Conversion Coating
✔ Features: Thin, Protective, Conductive, Passive (meaning it doesn’t easily react with other materials)
✔ Applications: Aerospace, Electronics, Industrial hardware,Defense and telecom
Custom Color – RAL / Pantone
Integrated manufacturing
CNC Machining + In-House Anodizing
Our state-of-the-art anodizing facility is designed to handle both small-batch and high-volume aluminum parts with consistent quality and fast turnaround. Equipped with advanced automated control systems and electrochemical tanks, we ensure precise oxidation thickness, color uniformity, and surface durability.
From pretreatment to sealing, each stage is closely monitored to meet industry standards for corrosion resistance, wear protection, and cosmetic appeal. Whether you need clear, black, red, blue, or custom dyed finishes, our plant supports grits ranging from 80# to 180# to achieve the desired texture.
From drawing review to finished parts, we consider machining dimensions, surface preparation, anodizing requirements, and inspection criteria as part of one project.
“We don’t just machine parts — we finish them in‑house.”
That means shorter lead times, better quality control, and a seamless experience for our customers.
Material and Color Matter
MachMaster provides in-house anodizing services with full control over quality, finish consistency, and color stability. Our color reference samples demonstrate the typical anodized finishes available for aluminum components.
We support both standard industry colors and customized finishes based on RAL or Pantone codes, enabling alignment with your product or brand requirements.
These samples are created under production-grade conditions to reflect the actual finish achievable on final parts.
• Compatible with AL6061, AL5052, and other engineering-grade alloys
• Surface options: matte, satin, semi-gloss
• Batch-to-batch color consistency is guaranteed under strict QA control
Sample color cards are available upon request for engineering review or procurement reference.
Engineering considerations
Protect Critical Dimensions and Features
Anodizing forms an oxide layer on the aluminum surface. Some of the layer penetrates the base material and some builds outward, so final dimensions can be affected.
For precision CNC components, identify critical dimensions, mating surfaces, threaded features, and areas requiring masking in your 2D drawing.
We can review these requirements during quotation so the finishing process is considered alongside the machining plan.
Information to specify in your drawing
- Critical dimensions and tolerances
- Coating thickness, if specified
- Masking / no-coating areas
- Required anodizing type
- Color and surface appearance
- Thread and mating-surface requirements
Quality assurance
Inspection Based on Your Requirements
Anodized parts should be evaluated against the functional and cosmetic requirements of the project. MachCNCMaster operates under an ISO 9001-certified quality management system.
Depending on the project, inspection requirements may include dimensional checks, visual appearance review, coating thickness requirements, and agreed inspection documentation.
For repeat production or strict cosmetic requirements, define acceptance criteria and approve a reference sample before the production run.
A Practical Manufacturing Partner for Anodized Aluminum Parts
In-House Anodizing
Closer coordination between machining and finishing through our own anodizing workshop.
One Manufacturing Workflow
Coordinate CNC machining and anodizing with one supplier instead of managing separate production handoffs.
Engineering Review
Review material, critical dimensions, masking, and finish requirements before production.
FAQ About Anodizing
What Is Anodizing And How Does It Work?
Anodizing is an electrochemical process that converts the surface of metals—most commonly aluminum—into a durable, corrosion-resistant, and decorative oxide finish. The part is submerged in an acid electrolyte bath and an electric current is applied, forming a protective layer.
What Are The Benefits Of Anodizing Metal Parts?
Anodized finishes offer enhanced corrosion resistance, improved surface hardness, long-term durability, and a wide range of aesthetic color options. It also provides better adhesion for paints, dyes, and sealants.
What Materials Can Be Anodized?
Aluminum and its alloys are the most suitable and commonly anodized materials. Some magnesium and titanium alloys can also be anodized under specific conditions, but aluminum provides the most stable and economical results.
What Are The Typical Applications Of Anodized Parts?
Anodizing is widely used in industries such as aerospace, automotive, consumer electronics, architecture, and CNC machining—anywhere parts need to combine durability with appearance and color consistency.
How Thick Is The Anodized Layer, And Will It Affect Part Dimensions?
Anodizing thickness usually ranges from 5 to 25 microns. The layer partially penetrates the base material and builds up externally. While thin, this can affect high-precision components, so dimensional tolerances must account for the added layer.
Explore More of Our Resources
Anodizing Basics & Processes:
Anodizing Types & Variations:
- 6 Different Types of Anodizing & Their Key Benefits
- Anodizing Black Aluminum: A Quick Guide
- What is Hard Coat Anodized?
Alternative & Comparative Finishes:
- Alodine Coating: What You Need to Know
- Anodizing vs Electroplating: Key Differences Explained
- Anodizing vs Galvanizing: What’s the Difference
- Black Oxide Metal Finishing: What You Need to Know
Still haven’t found what you’re looking for? Don’t hesitate to contact us. We’re available around the clock to assist you.
Tell Us What You Need
At MachMaster, our engineers review every request and respond with tailored solutions.
Your files are kept strictly confidential and will only be used for quoting and manufacturing purposes.
- info@machcncmaster.com
- +86 139 5006 6486