As Machined Surface Finishing
CNC parts in their natural post-machining state — deburred and chamfered, retaining visible tool marks and light scratches.
Ideal for functional prototypes, structural components, and parts where precision matters more than appearance. Compatible with metals and engineering plastics, ready for further processing if needed.
Why Choose As Machined Surface Finishing?
Cost-Effective
No additional polishing or finishing required, reducing production costs and lead time.
Fast Turnaround
Eliminating extra finishing steps accelerates delivery, ideal for prototypes and small batches.
Functional Precision
Retains mechanical accuracy, suitable for internal components, fitment surfaces, and functional prototypes.
Material Flexibility
Compatible with metals and engineering plastics, including aluminum, steel, stainless steel, copper, POM, ABS, and more.
Typical Applications
Functional Prototypes
Perfect for testing fit, function, and assembly before mass production.
Internal Components
Ideal for parts inside assemblies where surface finish is not critical.
Mechanical Reference Surfaces
Maintains precision for mounting surfaces, guides, and reference points.
Low-Volume Production Parts
Cost-effective for small batches where aesthetics are secondary.
CNC Machined Parts Edge Options
We offer a full range of surface finishing and edge condition options for custom CNC machined parts to enhance appearance, durability, corrosion resistance, and fit-functionality. Please choose the option that suits you.
As Machined
Standard finish directly from the CNC process with visible tool marks. Suitable for functional parts and prototypes where finish is not critical.
Deburred Edge
Remove burrs to ensure smooth edges, eliminating sharp protrusions. Suitable for all parts to ensure safety and functionality.
Chamfered Edge
Deburring and edge rounding treatment give products smooth and rounded edges, which prevents interference and jamming during assembly, ensuring that components fit together smoothly and precisely.
Applicable Materials
Aluminum Alloys
Commonly used for lightweight structural and mechanical components.
Steel & Stainless Steel
Provides strength, durability, and corrosion resistance for functional parts.
Copper & Brass
Excellent for conductive, decorative, or precision components.
Engineering Plastics
Materials like POM, ABS, Nylon, and PC for lightweight, functional parts.
Technical Specifications
Our As Machined CNC parts maintain functional accuracy while providing a natural post-machining surface. Below are typical specifications:
| Specification | Typical Value | Notes |
|---|---|---|
| Surface Roughness (Ra) | 1.6 – 3.2 μm | Varies depending on material and machining process |
| Maximum Profile Height (Rz) | 8 – 16 μm | Indicative for functional surfaces |
| Deburring / Chamfer | Standard | Edges are deburred, minor burrs may remain |
| Visible Tool Marks | Yes | Typical for milled and turned parts |
| Material Compatibility | Metals & Plastics | Aluminum, Steel, Stainless Steel, Copper, Brass, POM, ABS, etc. |
Frequently Asked Questions
Below are common questions about our As Machined surface finishing service. Learn how this process works and what to expect from your CNC parts.
It refers to CNC parts in their natural post-machining state — deburred and chamfered, retaining visible tool marks and minor scratches.
Metals like aluminum, steel, stainless steel, copper, brass, as well as engineering plastics like POM, ABS, and Nylon.
Yes, parts can undergo polishing, anodizing, plating, or other finishing processes after As Machined if required.
Absolutely. This finish preserves dimensional accuracy, making it ideal for functional testing and assembly verification.