Custom CNC Machining Services from China
On demand custom CNC machining services for rapid prototype and production parts. Get a quote now for your metal or plastic CNC machined parts, with tolerances as low as +/- 0.01 mm (+/- 0.00039 in.), and a delivery time of 3 working days.
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Certifications
ISO 9001:2015 | ISO 13485：2016 | IATF16949
Rapid CNC Machining With a Delivery Time of 3 Days
Looking for fast turnover plastic or metal CNC parts suppliers? With our plenty of CNC machine tools, our custom CNC machining can quickly turnover parts to accelerate product development while maintaining your project schedule. We can supply CNC parts in as little as 3 days. No need to wait for long cycles. Upload your 2D/3D design files to [email protected] for an instant quote, lead time, and DFM feedback.
When You Need Quality, BOYI Stands Out
At BOYI, we ensure top-quality CNC parts for your success. Using advanced equipment like CMM, 2D measuring tools, XRF analyzers, micrometers, and calipers, we guarantee strict quality control for projects of any size or complexity.
See our CNC parts quality control workshop for yourself
Get Your CNC Parts Today!
Transform your concept into reality with our fast, precise CNC prototyping and production services.
Custom CNC Machining Services Capabilities
We quickly produce prototypes and end-use machined parts within a few days through our milling, turning, grinding, EDM machining, wire cutting, and routing.
Easily create metal and plastic milling parts with complex geometries using our extensive range of 3-axis, 4-axis, and 5-axis milling machines.
Using our CNC turning technology to produce complex external geometries and internal holes, including machining various threads.
CNC Grinding Services
For ultra-flat or high-precision parts with strict outer and inner diameter tolerances, our CNC grinding will perfectly meet your project requirements.
EDM Services
EDM is ideal for handling complex shapes and fine details. It effectively removes unwanted material, perfect for sharp angles and undercuts.
Wire Cutting Services
Wire cutting is suitable for various complex shapes, meeting strict application requirements. It achieves high precision in edge and contour processing.
We offer high-quality CNC routing services for soft materials, such as wood, to meet various prototype and part design needs.
CNC Machining Tolerances
Whether it’s metal or plastic CNC parts. When cooperating with BOYI TECHNOLOGY, we guarantee that all parts will be manufactured according to your specifications.
| Standards | Details | |
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Maximum Part Size |
Milling: 4000 mm×1500 mm×600 mm |
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Minimum Part Size |
1 mm×1 mm |
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Minimum Feature Size |
Φ 0.50 mm |
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Linear Dimension |
±0.025 mm |
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Tolerances |
±0.01 mm |
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Shaft Diameters |
±0.025 mm |
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Min Wall Thickness |
0.5mm |
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Min End Mill Size |
0.5mm |
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Min Drill Size |
1mm |
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Hole Diameters (Not Reamed) |
±0.02 mm |
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Surface Finish |
Standard finish is as-machined: 125 Ra or better. Additional finishing options can be specified when getting a quote. |
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Standard Lead Time |
3 business days |
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CNC Machining Design Guidelines
Enhance your CNC machining design with BOYI TECHNOLOGY CNC machining design Guidelines to create CNC-machined parts that meet industry best practices.
| Feature | Description |
|---|---|
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Threads & Tapped Holes |
BOYI can produce threads of any specification and size required by our customers. view our threading standards |
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Tapped Hole Clearance |
Incorporate a slight clearance beyond the intended tapped depth to secure complete thread formation. |
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Undercuts |
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Internal Corner Radii |
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Floor Fillets |
Keep floor fillets smaller than corner fillets for efficient machining. |
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Part Marking |
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Design Complexity |
Reduce the number of intricate cuts and minor features to simplify the machining process and contain costs. |
CNC Machining Materials
BOYI provides industrial standard metal and plastic material processing quotations. If you have custom material requirements, please send your request to [email protected] for evaluation by our engineers.
- LDPE
- PPSU
- CPVC
- PSU
- PTFE
- Carbon Fiber
- Wood
We provide a quotation of 100+materials so that you can better compare and choose suitable materials.
Custom CNC Machined Part Surface Finishes
During CNC machining, visible tool marks are usually left on the surface of parts to create the desired shape. To avoid the impact of such marks on the final product, we offer multiple surface finishing options to enhance the functionality and aesthetics of the parts.
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.
If you have more complex surface finishing requirements, please contact the [email protected].
Tour Our Robust CNC Machine Shops
Watch our video for a quick tour of our 6,000 square meter manufacturing facility in Dongguan,Guangdong. China, to leam more about BOYI CNC machining capabilities and how to quickly manufacture parts in 3 days.
BOYI 3-axis, 4-axis, and 5-axis CNC machine tools – in just 72 hours, you can obtain precision CNC parts, which is our focus on providing customers with fast CNC machining services.
5 Axis CNC Machining Center
We have 5 axis CNC machining to meet high complex customized CNC parts requirement .
Gallery of Custom CNC Machined Parts
Following shows the custom CNC machining prototypes and end-use parts we produce for our customers.
Custom CNC Machining in Key Industries
We’ve had the privilege of manufacturing millions of CNC parts for countless applications, but we truly excel in these key industries with our CNC capabilities.
Aerospace Industry
Automotive Industry
Medical Industry
Robotics
How BOYI Compares to Online CNC Quotation Platforms
Utilizing our experienced production engineers and technical experts to handle complex projects and special requirements:
1. Each inquiry is reviewed by our engineers to ensure the accuracy of calculating material and processing costs – AI systems may not accurately handle special design features (such as sharp corners and radii), resulting in high or unreasonable quotations.
2. We provide on-demand manufacturing solutions, producing parts based on customer specific needs and design requirements – for situations involving complex CNC machining, online platforms are suitable for projects that require fast and standardized services.
Our precision CNC machining equipment is designed for rapid prototyping and low volume manufacturing of end use components. Whether it is a single or thousands of CNC parts, we will provide accurate prices and DFM reports within 2 hours.
What is CNC Machining and How Does it Work?
CNC machining is an automated manufacturing process where computer-controlled tools shape raw materials into precise parts. It begins with a 3D CAD model that is converted into G-code, guiding cutting tools like end mills to remove excess material accurately.
Various CNC processes, such as milling and turning, cater to different geometries and production needs. This method is ideal for one-off prototypes, custom components, and mid-volume runs, offering high precision, repeatability, and efficiency.
Applications of CNC Machining
CNC machining is widely used across industries such as automotive, aerospace, and medical.
- Automotive: Engine parts, structural components
- Aerospace: Lightweight structures, turbine parts
- Medical: Implants, surgical instruments
- Electronics: Device housings, enclosures
- Industrial: Machinery components, custom tooling
- Prototyping: Custom, low-volume parts
Benefits of CNC Machining
CNC machining offers numerous advantages in modern manufacturing:
- Achieves high accuracy for complex designs
- Consistent quality in every part
- Speeds up production with automation
- Works with various materials and designs
- Ideal for prototypes and low-volume runs
About CNC Machining FAQs
Generally, we can accept various file formats, including.STP,.STEP,.X-T, among others.
CNC machining is suitable for various materials, including metals (such as aluminum, steel, copper), plastics (such as ABS, polypropylene), and composite materials. We can choose the most suitable materials for processing according to customer needs. View our material list
At Boyi, we have flexible production capabilities that can meet the needs of one-time prototyping and large-scale production operations. Whether you need a single part or thousands of parts, we can provide you with solutions.
Yes, we offer comprehensive quality reports, including First Article Inspection (FAI), material certification, and process capability reports upon request. Our strict ISO-certified quality control ensures every part meets precise specifications. View out our quality control process
For an accurate estimate, submit your 3D CAD model to receive an interactive quote with Design for Manufacturability (DFM) feedback. Send it to [email protected]
Standard lead times range from 3 to 10 days, depending on part complexity, material availability, and order volume.
Essential CNC Machining Resources for Engineers
Latest news, trends and manufacturing design tips for precision cnc machining.
