Surface finishing is an essential stage of the manufacturing process, influencing not only a part’s appearance but also its durability, functionality, and long-term performance. The right surface treatment can improve corrosion resistance, wear resistance, hardness, conductivity, and environmental protection while delivering the required color, texture, and visual quality.

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Surface Finishes

Description

Services

Applicable Materials

Anodizing Type II

Forms a corrosion-resistant oxide layer on aluminum surfaces, improving durability while providing a wide range of decorative color options and a clean matte finish.

• CNC machining
• 5-axis CNC machining
• Sheet metal fabrication

• Aluminum
• Aluminum Alloys

Electroplating

Deposits a thin metallic coating onto part surfaces to improve corrosion resistance, conductivity, wear resistance, or appearance.

• CNC machining
• Sheet metal fabrication
• Precision components

• Steel
• Stainless Steel
• Copper Alloys
• Aluminum

Sand Blasting

Uses high-pressure blast media to clean surfaces by removing coatings and impurities.

• CNC machining
• Sheet metal fabrication

• Metals (Steel, Aluminum)
• Plastics

Polishing

Smooths the surface through mechanical finishing processes to achieve a bright, reflective appearance and improved surface quality.

• CNC machining
• Sheet metal fabrication

• Aluminum
• Stainless Steel
• Brass
• Plastic

Power Coating

Applies a durable powder-based protective layer that provides excellent resistance to corrosion, impact, and weathering with various color and texture options.

• Sheet metal fabrication
• CNC machining
• Low-volume production

• Aluminum
• Steel
• Stainless Steel

As Machined

Standard finish with a surface roughness of 3.2 μm (126 μin), effectively removing sharp edges and ensuring clean deburring.

• CNC machining
• Sheet metal fabrication

• Metals
• Plastics

Anodizing Type III

Creates a thicker, harder oxide coating for enhanced wear resistance, dimensional stability, and protection in demanding environments.

• CNC machining
• Precision machining
• Functional prototypes

• Aluminum
• Aluminum alloys

Black Oxide

Black oxide treatment creates a black corrosion-resistant layer on metal, often used for decorative and functional purposes.

• CNC machining
• Sheet metal fabrication

• Steel
• Iron

Plating

Plating deposits a thin metal coating on a part to enhance durability and appearance using a chemical or electric process.

• CNC machining

• Metals (Steel, Copper, Aluminum)

Spray Paint

Quick-drying, easy-to-use paint in an aerosol can for smooth, even coverage.

• CNC machining

• Metals (Steel, Copper, Aluminum)

Enhance Your Design with Premium Surface Finishes

Improve the appearance, durability, and performance of your parts with TOP Prototype’s wide range of surface finishing options. Each process is selected according to material compatibility, functional requirements, color, texture, production volume, and budget.

From protective coatings to decorative finishes, we help you achieve the right balance between aesthetics and performance for your project.

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