CNC Milling Services
Custom-milled parts with tight tolerances, excellent surface finishes, and fast turnaround times. 3-axis, 4-axis, and 5-axis milling for complex geometries.
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Certifications
ISO 9001:2015 | ISO 13485：2016 | IATF16949
CNC Milling Services – High-Quality, Custom Machining Solutions
Need rapid prototypes or full-scale production parts? We deliver CNC machining services down to 0.01mm, with turnaround times as fast as 3 days. Whether it’s a straightforward 3-axis job or a complex 5-axis masterpiece, we transform your designs into reality with exceptional accuracy and craftsmanship. Get started today—request your instant CNC quote now!
Precision CNC Milling Solutions for Every Design
Discover our comprehensive CNC milling services designed to meet every need—each process is engineered to deliver exceptional quality and accuracy for prototypes, small batches, and high-volume production.
3-Axis CNC Milling
Ideal for machining simple yet precision-demanding parts. 3-axis milling is not only cost-effective and economical, but it’s also perfect for small-batch production and prototype manufacturing.
4-Axis CNC Milling
When your design requires machining from multiple angles, 4-axis milling handles it with ease. It can process complex geometric shapes and meet multi-sided machining needs.
5-Axis CNC Milling
For the most intricate and detailed designs, 5-axis milling is the premium choice. It operates from multiple angles simultaneously, ensuring every detail is executed with precision.
CNC Milling Capabilities
Our CNC milling machines come in various types, from standard 3-axis to complex 5-axis projects. Our precision CNC milling technology customizes milling parts with excellent precision and craftsmanship.
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Feature
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Metric units
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Imperial units
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Maximum Part Size
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4000 mm×1500 mm×600 mm
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158 in.×590 in.×24 in.
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Minimum Part Size
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1 mm×1 mm
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0.04 in.×0.04 in.
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Linear Dimension
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±0.025 mm
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±0.001 in.
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Shaft Diameters
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±0.025 mm
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±0.001 in.
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Hole Diameters (Not Reamed)
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±0.02 mm
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±0.0008 in.
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Tolerances
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±0.01 mm
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±0.0004 in.
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Kindly ensure to explicitly denote the customized tolerance values on the engineering blueprints.
CNC Milling Materials
In addition to plastics and metals, CNC milling is also used to mill various allowable materials and other customized materials according to your requirements.
Plastics
- Nylon
- ABS
- PMMA (Acrylic)
- PET
- PEI
- PEEK
- Polycarbonate
- Polyethylene
- POM
- Polypropylene
- HDPE
- PVC
- LDPE
- CPVC
Precision CNC Milling Surface Finishes
Transform your parts with our precision CNC milling surface finishes. We offer a range of finish options—from ultra-smooth polished surfaces to tailored textured profiles—that enhance both aesthetics and performance.
Specific to aluminum, this finish can range from smooth to matte or gloss, with customizable colors. A thin layer (0.002mm to 0.04mm) is removed.
The polished finish offers a high gloss, smooth surface with Ra 0.8μm (Ra 32μin) roughness, ideal for mirror-like applications.
Bead Blasting
Metals or plastics parts surface is left with a smooth, matte appearance, with no thickness removal specified.
Black Oxide
Black oxide is a corrosion-resistant treatment for metals, providing a matte black finish, mild rust protection, and improved wear resistance.
Powder Coating
Applicable to metals, offering matte, gloss, or textured finishes with customizable colors. Thickness removed ranges from 0.05mm to 0.15mm.
As Machined
This finish retains visible tool marks and is suitable for both metals and plastics. There is no specific thickness removed in this finish.
Brushing
Brushing produces a satin texture on parts, offering a smooth, uniform finish while concealing minor flaws.
Electroless Nickel Plating
Electroless Nickel Plating provides a uniform, corrosion-resistant finish on metals, with excellent hardness and wear resistance.
Chromate Conversion Coating
This finish can appear smooth or matte, often with a clear or slight yellow tint. A very thin layer (0.25–1 micrometer) is removed.
E-Coating
This finish, suitable for metals, can be matte or gloss, with black as the most common color.
Painting
Available for metals and plastics, this finish can be matte, gloss, or textured, with color matching possible.
Heat Treatment
Heat treatment enhances metal properties such as hardness, strength, and toughness through controlled heating and cooling processes.
What is CNC Milling?
CNC milling is a method of using computer-controlled milling machines to cut metal or plastic, capable of producing intricate features like slots, holes, and contours. It includes 3-axis, 4-axis, and 5-axis milling.
- 3-Axis Milling – Moves along X, Y, and Z axes.
- 4-Axis Milling – Adds rotation around one axis.
- 5-Axis Milling – Adds rotation around two axes for intricate designs.
It starts with a CAD-designed model, which is converted into a CNC program to control the machine’s movements. The workpiece is securely clamped, and a high-speed rotating spindle follows the programmed path to shape the material with exceptional accuracy.
Advantages of CNC Milling
- Delivers tight tolerances and accurate parts.
- Ensures identical parts with minimal variation.
- Works with various materials like metals and plastics.
- Easily creates intricate designs and features.
- Reduces production time and increases output.
- Minimizes human mistakes in manufacturing.
- Ideal for both prototypes and large batches.
Applications of CNC Milling
- Aerospace – Precision components like engine parts, brackets, and housings.
- Automotive – Manufacturing engine components, gears, and structural parts.
- Medical Devices – Custom surgical instruments, implants, and prosthetics.
- Electronics – Parts for housings, connectors, and circuit boards.
- Consumer Products – Production of tools, appliances, and machinery parts.
- Industrial Equipment – Components for heavy machinery, valves, and pumps.
- Prototyping – Rapid creation of prototypes for testing and design validation.
- Defense – Manufacturing precision military equipment and components.
About CNC Milling FAQs
Yes, we can provide sample or prototype production services according to your requirements. Whether you need low-volume manufacturing or a single sample, we can meet your needs.
The choice of axis depends on the complexity of your project. Typically, for simple flat and simple curved surfaces, 3-axis milling is sufficient. If more axis movements are required to handle complex geometries and surfaces, 4-axis or 5-axis milling would be more suitable.
By utilizing the latest CNC milling capabilities, Boyi can produce high-precision and fast milling parts within 48 hours. We strive to ensure high efficiency and timely delivery.
Offers high-precision tolerances, including sub +/- 0.01mm tolerances. We are the experts in making parts that are truly custom and ready to use.
CNC Milling Resources
Learn more about the working principle of CNC milling and how to design parts to fully utilize this machining process.
What is 3-Axis CNC Machining: Basics, Process, and Uses
What is Wire EDM Cutting: Process, Materials, and Applications
