CNC Milling Services:
3-Axis to 5-Axis
In-house 3-, 4-, and 5-axis CNC milling. Standard tolerance ±0.05mm, precision to ±0.01mm available. 50+ machines, 10,000+ parts monthly. From single prototypes to 100k+ production runs.
- 6061/7075 Aluminum, 304/316L Stainless, TC4 Titanium
- Surface finish Ra 0.4-3.2 μm, anodizing/powder coating available
- FAI reports, material certs, CMM inspection
NDA available. Files reviewed by engineers, not algorithms.
Verified Precision
We don't just claim precision; we verify it. Every CNC part undergoes rigorous inspection using advanced metrology equipment.
CMM
Zeiss/Hexagon
Projector
2D Measurement
Height Gauge
Tesa/Mitutoyo
Roughness
Surface Tester
On-demand CNC Milling Services
CNC milling is a computer-controlled machining process that uses a rotating cutting tool to remove material from a stationary workpiece, allowing for the creation of complex shapes, holes, and surface features.
DFocus PROTOTYPE Pro is a quality-controlled machining service provider, offering high-precision custom machining services for prototypes, low-volume production, and full-scale manufacturing. With our in-house CNC machine shop, we offer fast lead times and competitive pricing.
Watch Our CNC Milling Process in Action
3-Axis, 4-Axis, and 5-Axis Machining
From simple prototypes to highly complex components, our advanced milling capabilities ensure we can handle a wide range of geometries.
3-Axis CNC Milling
Equipped with advanced 3-axis CNC machines, this is the most cost-effective way to get simple CNC prototypes and production parts.
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4-Axis CNC Milling
Besides less set-up compared with 3-axis milling, 4-axis milling is an exclusive option for features on the side wall.
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5-Axis CNC Milling
Best for complex precision parts. The workpieces can be milled from multiple directions in a single setup.
Get QuoteFlexible CNC Milling Solutions
We adapt to your product development stage, from initial concept to market launch.
Rapid Prototyping CNC Milling
With custom milling, we can quickly produce high-precision CNC prototypes, functional prototype parts, and intricate machined components for various applications before full-scale production.
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Low Volume CNC Milling
Our low-volume milling services deliver precision parts quickly and cost-effectively. With flexible production and no tooling costs, we help you validate designs or fulfill small batches.
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CNC Milling Materials
Metal Alloys
- Aluminum Alloy (6061, 7075)
- Steel (Mild Steel & Hardened)
- Stainless Steel (303, 304, 316)
- Brass (C360, C260)
- Copper (C110, C101)
- Titanium (Grade 2, 5)
Plastics
- POM / Delrin
- ABS
- Nylon (PA6, PA66)
- Polycarbonate (PC)
- PEEK
Aluminum Alloy (6061, 7075, 2024)
Lightweight, low density, corrosion-resistant, good mechanical properties, and ideal for milled parts in aerospace, electronics, and automotive industries.
CNC milling supports a wide range of additional metals, plastics, and composites. Visit our materials page for a full list.
CNC Milling
Surface Finishes
At DFocus PROTOTYPE Pro, we provide a full range of CNC milling surface finishes that enhance both functionality and appearance, improving durability, resistance to corrosion, and aesthetics.
Anodizing
Type II & III for corrosion resistance.
Powder Coating
Durable finish in any color.
Bead Blasting
Uniform matte texture.
The as-machined finish is the standard surface finish directly from the CNC milling process. It provides a clean, functional surface with visible tool marks.
- Surface Roughness: Ra 3.2 μm (typical)
- No additional processing required
- Most cost-effective option
- Ideal for internal components and prototypes
Best for: Functional prototypes, internal parts, components where appearance is not critical.
Progressive sanding and polishing removes tool marks and creates smooth, reflective surfaces. Available in multiple grades from matte to mirror finish.
- Surface Roughness: Ra 0.8 - 0.1 μm
- Multiple finish levels: Matte, Semi-gloss, High-gloss, Mirror
- Enhances aesthetics and reduces friction
- Suitable for all metals and most plastics
Best for: Consumer products, display components, optical housings, medical devices.
Bead blasting creates a uniform matte texture by propelling fine glass beads at the surface. Removes tool marks while providing excellent grip.
- Surface Roughness: Ra 1.0 - 2.5 μm
- Uniform satin/matte appearance
- Hides minor surface imperfections
- Improves paint and coating adhesion
Best for: Enclosures, handheld devices, aerospace components, automotive parts.
Anodizing is an electrochemical process that creates a durable, corrosion-resistant oxide layer on aluminum parts. Available in Type II (decorative) and Type III (hardcoat).
- Type II: 8-25 μm coating, wide color range
- Type III (Hardcoat): 25-75 μm, extreme hardness
- Excellent corrosion and wear resistance
- Colors: Clear, Black, Red, Blue, Gold, and more
Best for: Consumer electronics, aerospace, automotive, medical devices, sporting goods.
Powder coating applies a durable, decorative finish using electrostatically charged powder particles that are heat-cured to form a hard coating.
- Coating Thickness: 50-100 μm
- Excellent impact and scratch resistance
- Wide range of colors and textures
- Environmentally friendly (no solvents)
Best for: Outdoor equipment, industrial machinery, furniture, automotive parts.
Passivation is a chemical treatment for stainless steel that removes free iron from the surface and enhances the natural chromium oxide layer.
- Compliant with ASTM A967, AMS 2700
- Enhanced corrosion resistance
- No dimensional change
- Clear, non-visible finish
Best for: Medical devices, food processing equipment, marine components, aerospace.
Tolerances for CNC Milling
We deliver cost-effective parts with standard tolerances and also specialize in high-precision components for advanced products.
| 3-Axis | 4-Axis | 5-Axis | |
|---|---|---|---|
| Maximum Part Size | 1000 x 500 x 500 mm | 1000 x 500 x 500 mm | 4000 x 1500 x 600 mm |
| Minimum Part Size | 5 x 5 x 5 mm | 5 x 5 x 5 mm | 5 x 5 x 5 mm |
| General Tolerances | ±0.1 mm | ±0.05 mm | ±0.01 mm |
| Lead Time | Delivery of simple parts can be as fast as 1 day. | Delivery of simple parts can be as fast as 1 day. | Delivery of simple parts can be as fast as 1 day. |
Design Guidelines
Good CNC milling design improves machinability, lowers costs, and ensures quality.
Part size
Machined parts are limited in size by the machine envelope. 3-axis machines typically have a larger build size than multi-axis machines.
Feature alignment
For 3-axis machining, it costs more to add features to multiple faces. Try to design parts with all features aligned on a single face.
Fillets
Internal fillets should be as large as possible. The radius of the internal fillet should be greater than 1/3 the cavity depth.
Wall thickness
Metal parts typically require a minimum wall thickness of 0.8 mm, while plastic parts require 1.5 mm. Thinner walls may warp.
Cavity depth
To minimize chatter and tool deflection, machined cavities should be no more than 4x the width in depth.
Design Tips for CNC Milled Parts
Get the full comprehensive guide.
A customer's words mean more than ours see what our satisfied customers have said.
Our No.1 source for CNC parts
Even for a complex 5 axis CNC part we got very good results from DFocus PROTOTYPE Pro. We did a lot of projects with them during the last 3 years and they always did an outstanding job - high quality.
Using CMP for many years now
Using DFocus PROTOTYPE Pro for many years now. Always quick, always efficient, always reliable. If something's wrong they redo the parts without any drama. Compared to most European CNC providers, their customer service is head and shoulders above.
FAQ
What Is CNC Milling And How Does It Work?
CNC milling is a subtractive manufacturing process that uses rotary cutters to remove material from a workpiece. It works by feeding the workpiece against the rotating cutter to create the desired shape.
Why Choose DFocus PROTOTYPE As Your CNC Milling Supplier?
We offer Western service standards combined with Chinese manufacturing efficiency, ensuring you get high-quality parts at competitive prices with excellent communication.
Can You Offer CNC Milling DFM (Design for Manufacturability)?
Yes, our engineering team reviews every design for manufacturability and provides feedback to optimize your parts for cost and quality.
When Can My CNC Machining Orders Be Ready?
Simple parts can be ready in as fast as 3 days. Standard lead times are typically 7-10 days depending on complexity and volume.
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