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Why Choose Unionfab for Your CNC Machining Projects?

Unionfab’s Machining Capabilities

Leveraging over 400 CNC machines across our six strategically located facilities, Unionfab offers a comprehensive suite of machining solutions. We excel at crafting high-precision parts, handling both small-batch orders and high-volume production runs. Our dedicated team manages a robust supply chain, ensuring we have the resources to meet the diverse needs of various industries.

Superior Flexibility & Speed

From rapid prototyping to full-scale production, our 3, 4, and 5-axis machining capabilities empower you to bring your ideas to life quickly and efficiently. We offer competitive pricing and lead times through our user-friendly Instant Quote system. Simply upload your CAD files or technical drawings for a fast and accurate quote on various metals and plastics.

Industry-Leading Cost Savings

Our CNC Milling service is 50% lower than that of European and American competitors. This translates to significant savings on your high-precision parts without compromising on quality.

Quality You Can Trust

Our ISO 9001:2015, ISO 13485, and AS9100D certified quality management system guarantees parts that meet your exact specifications.

See Your Part in 3D (Upload for a Detailed Preview)

What is CNC Machining?

CNC machining, or Computer Numerical Control machining, is a subtractive manufacturing process widely used across various industries. It excels at creating high-precision and complex parts from a solid block of material, ideal for applications requiring high accuracy, such as aerospace components, medical devices, and intricate molds.

CNC programs guarantee consistent part production across batches. This minimizes human error and ensures every component meets your exact specifications, crucial for high-volume manufacturing and maintaining quality control.

CNC machines can handle a wide range of materials, from traditional metals like aluminum, steel, and titanium to engineering plastics, composites, and even wood. This allows you to select the material that best suits your project's needs in terms of strength, weight, and functionality.

metal cnc

Unionfab CNC Machining Options: Milling, Turning and More

cnc metal milling machine; cnc milling services

CNC Milling Services

Fast, Precise Prototypes & Parts | ISO-Certified Quality | Instant Quotes in Minutes

View Our Custom Milling Services
cnc metal lathe, cnc turning services

CNC Turning Services

High-accuracy & Fast Turnaround | ISO-Certified Quality | Instant Quotes in Minutes

View Our Custom Turning Services
multi axis cnc, high volume production

One-Stop Shop for CNC Machining

We Machine It All: Routing, Grinding, Drilling, EDM, Wire EDM & Multi-Axis CNC | ISO-Certified Quality | Instant Quotes in Minutes

Contact Sales for Specific Needs

Unionfab CNC Machining Tolerance Considerations

FeatureStandardAdvanced OptionNotes

Tolerance

±0.005" (±0.127mm)

±0.0005" (±0.0127mm)

Tolerances will be held to +/-.005"(+/-.127mm) in accordance with ISO 2768 unless otherwise specified.

Surface Roughness (Ra)

125uin (3.2μm)

Up to 16uin (0.4μm)

Surface roughness will be held to 125uin/3.2um Ra unless otherwise specified.

Lead Time

7-12 days

Contact us for advanced options.Get an instant quoteto see the lead time.

Accepted File Formats

3D: STEP, STP, IGS 2D drawings: DWG, DXF, PDF

Contact us for specifics.

Delivery time may be 2-3 days longer if only 2D drawings are provided.

Machining Techniques

Milling, Turning, Routing, Drilling, Grinding, EDM, Wire EDM

3 aixs, 4 axis, 5 axis machining

Wide range of capabilities, inquire for specifics.

Inspection

Standard Report (Free)

CMM Inspection or Third Party Inspection (Fee Required)

Free standard report, additional options available.

Unionfab CNC Material Options

Unionfab CNC Machining Steel

AISI 1018 Steel
AISI 1045 Steel
AISI 1066 Steel
AISI 1140 Steel
AISI 4140 Steel
A2 Tool Steel
D2 Tool Steel
P20 Tool Steel
H13 Tool Steel
M2 Tool Steel
YT15 Tungsten Steel
YT20 Tungsten Steel

Unionfab CNC Machining Finishes

Anodizing
Anodizing, primarily used on aluminum, employs electrochemical principles to create a layer of Al2O3 (aluminum oxide) film on the surface of aluminum and its alloys. This oxide film offers unique properties such as protection, decoration, insulation, and wear resistance.

Unionfab CNC Machining Design Guidelines

FeatureRecommendationReason

Tolerances

Use tight tolerances only when necessary

Engineers often specify stricter tolerances than necessary. Stricter tolerances increase machining time and cost.

Text

Avoid small or raised text

Adding text increases costs, especially if it's small. Opting for recessed rather than raised text.

Walls

Avoid tall and thin walls

Thin walls are prone to breaking and warping. Use 3:1 width-to-height ratio and add draft angles.

Internal Corners

Minimize sharp corners, use radii

CNC tools are cylindrical, so radii ensure proper machining. Make sure radius size > tool diameter.

Tool Sizes

Design with standard tool sizes

Custom tools are expensive and increase lead time.

Feature Alignment

Maximize alignment with machine axes

Features aligned with X, Y, Z axes require fewer tool changes and setups, reducing cost.

Unionfab CNC Machining FAQs

What is CNC Machining?

CNC machining, or Computer Numerical Control machining, is a manufacturing process where a computer controls automated machinery to remove material from a solid block of metal, plastic, wood, or foam. This subtractive process precisely sculpts the material into a desired final shape.

CNC Machining: Pros and Cons

cnc machine tools

Rapid Prototyping: CNC machining is ideal for creating rapid prototypes, allowing for quick design iterations and testing before mass production. This reduces development time and costs.

High Precision and Repeatability: CNC machines achieve exceptional accuracy and consistency, essential for complex parts and tight tolerances. This translates to reliable performance and efficient assembly in the final product.

Wide Range of Materials: CNC machining can handle a vast array of materials, from soft plastics to high-strength steels and exotic alloys. This versatility allows for the creation of parts with the optimal properties for each application.

Complex Geometry Manufacturing: CNC machining excels at creating intricate shapes and features that would be difficult or impossible with traditional machining methods. This opens up design possibilities and allows for more functional and innovative parts.

Automation and Efficiency: CNC machines are computer-controlled, enabling unattended operation and reducing human error. This leads to increased production speed, lower labor costs, and consistent quality output.

CNC Machining Applications

cnc automotive parts

Automotive Industry

From high-performance engine components like pistons and valves crafted from lightweight yet robust materials, to intricate transmission parts, CNC machining delivers exceptional precision and repeatability..

cnc electronics; cnc circuit board

Electronics

From intricate heat sinks for cooling to precise connectors and circuit board prototypes, CNC machining empowers miniaturization, functionality, and performance in electronics.

cnc robot

Robotics

CNC machining enables the creation of lightweight yet strong robotic arms, grippers, and high-precision components, driving the development of next-generation robots.