Custom Online CNC Machining Services
We offer a full range of CNC machining services, including high-precision CNC milling, turning, and rapid prototyping, with tolerances down to ±0.001″. Get your DFM analysis and quote now.
- Factory direct sales price
- CNC machined parts tolerance range ±0.001′′ to 0.005′′
- ISO 9001:2015 certified
- Free samples are available
- High-precision CNC machine
Our CNC Machining Capabilities
We excel at machining parts with high precision tolerances and complex geometries. Leveraging advanced technology, our precision CNC machining services can transform your designs into high-quality components.
CNC Milling Service
Our factory is equipped with advanced five-axis CNC milling machines capable of machining plastic and metal parts with complex geometries and tight tolerances. For projects requiring high efficiency and low cost, we also provide low-cost machining services using high-precision three-axis and four-axis milling centers.
CNC Turning Service
CNC turning is a more efficient process for manufacturing high-quality cylindrical parts (such as worm gear shafts) from plastic and metal bars or tubes. Our lathes utilize powered tools to achieve simultaneous milling and turning, reducing delivery time and ensuring part accuracy.
EDM & Wire-Cut Service
EDM and wire cutting are indispensable processes in CNC machining, enabling precision machining that is impossible with traditional milling. Using copper, graphite, or molybdenum wires, we can precisely cut complex shapes such as sharp angles and chamfers with extremely high EDM accuracy, and remove excess material from hardened workpieces.
CNC Grinding Service
If you require parts with ultra-flat surfaces or circular parts with tolerances of ±0.005 mm for both outer and inner diameters, our CNC grinding service is ideal.
Swiss Machining Service
Swiss machining offers an extremely efficient way to manufacture slender, complex parts without the risk of deformation. The synchronized movement of the powered tool and the workpiece allows for cutting of the material within the workpiece fixture. Compared to conventional CNC lathes, it provides greater stability and prevents part deformation.
CNC Routing Service
In addition to standard precision milling services for engineering plastics and metals, we also offer professional CNC engraving services. This service is ideal for CNC engraving. It’s perfect for prototypes and parts made from soft materials such as EPS foam, wood, and EVA.
What is CNC Machining?
CNC machining, or Computer Numerical Control machining, is a high-precision subtractive manufacturing process. It uses high-speed cutting tools to automatically machine high-precision parts from metal or plastic materials.
Common CNC machines include 3-axis, 4-axis, and 5-axis milling machines (where the workpiece can remain stationary while the tool moves), CNC lathes (where the tool remains stationary while the workpiece rotates and moves), and router machines (where the tool and workpiece can move simultaneously).
Experienced technicians program CNC machines using CAD models, enabling the creation of precise and repeatable toolpaths.
One of the greatest advantages of precision CNC machining is its compatibility with a wide variety of materials. The process works with virtually any metal or hard plastic, providing durable solutions for aerospace, medical, and automotive applications.
Why Choose Us For Custom CNC Machining?
From intricate components to robust industrial parts, our meticulous precision CNC machining services meet OEM specifications across industries worldwide.
Saving Your Cost
As a leading CNC machining manufacturer in Shenzhen, China, we possess efficient production capacity, advanced equipment, and strict cost control, enabling you to save 30-50% on custom CNC machining.
On-demand Production
Our CNC milling services can meet your needs from 1 piece to over 10,000 units. Whether you need rapid prototyping, low-volume manufacture, or large-batch production, we can flexibly adjust the scale to suit your project requirements.
Material Selection
We offer over 50 engineering-grade plastic and metal materials, including ABS, polycarbonate, nylon, PEEK, aluminum, stainless steel, platinum, and copper, ideal for a variety of custom part applications in the aerospace, medical, automotive, and electronics industries.
Quality Assurance
As an ISO 9001:2015 certified manufacturer, we provide our clients with RoHS, SGS certifications, complete material certifications, and detailed inspection reports.
High Precision Tolerances
We can achieve an accuracy range of ±0.001″ to ±0.005″ (0.025mm to 0.125mm). With our expertise, even the most complex custom parts can be guaranteed to fit perfectly every time.
Fast and Reliably Delivery
Enjoy fast delivery cycles and on-time shipping services. Located in Shenzhen, China, with a prime location near major international ports, we ensure your parts have smooth logistics and reliable global distribution.
Quality Assurance
1. Material Inspection: We conduct rigorous material inspections for every project to ensure all raw materials meet stringent quality standards and your specific specifications.
2. Skilled Workforce: Our team of experienced CNC machine operators and precision engineering experts is responsible for every stage of the customized CNC machining process, ensuring tight tolerances, superior surface finishes, and complete compliance with your technical specifications.
3. In-Process inspection: Throughout the CNC machining production phase, our quality control team conducts regular measurements and interval checks to immediately identify and resolve any deviations, thereby ensuring zero-defect production.
4. Final inspection: After machining, we conduct rigorous inspections. We verify specifications such as critical dimensions, surface roughness, and appearance finish. This ensures that each part fully meets your expectations and standards before shipment.
CNC Machining Tolerances
Qualigie’s general linear tolerance of machined metal parts is lS0 2768 (fine), and lS0 2768(medium) for plastic parts.
Normally, we can meet the machining accuracy of +0.127mm. lf tighter tolerances are required, a 2D drawing with annotation information will be necessary. Our engineering team will communicate with you the critical dimensional tolerances and provide the highest possible machining accuracy.
| Tolerance class | Division of basic dimension | ||||||||
| Designation | Description | 0.5 (1) up to 3 |
Over 3 up to 6 |
Over 6 up to 30 |
Over 30 up to 120 |
Over 120 up to 400 |
Over 400 up to 1000 |
Over 1000 up to 2000 |
Over 2000 up to 4000 |
| Permissible deviations | |||||||||
| f | fine | 0.05 | 0.05 | 0.1 | 0.15 | 0.2 | 0.3 | 0.5 | - |
| m | medium | 0.1 | 0.1 | 0.2 | 0.3 | 0.5 | 0.8 | 1.2 | 2 |
| c | coarse | 0.2 | 0.3 | 0.5 | 0.8 | 1.2 | 2 | 3 | 4 |
| v | very coarse | - | 0.5 | 1 | 1.5 | 2.5 | 4 | 6 | 8 |
TOLERANCE OF CNC MACHINING IN FIRST PART
Our precision CNC machining centers can manufacture small to large part sizes with tight tolerances and high precision. Our general tolerance limits for CNCmachined metals and plastics are generally affected by the material type and the part geometry. See below our general tolerance limits for metal and plastic materials:
| Tolerance Lever | Over all Dimension Range | ||||||
| Specifications | <<3, >0.5 | <<6, >3 | <<30, >6 | <<120,>30 | <<400,>120 | <<1000,>400 | <<2000,>1000 |
| Tolerance Standard | |||||||
| F | ±0.05 | ±0.05 | ±0.1 | ±0.05 | ±0.05 | ±0.1 | ±0.1 |
| M | ±0.1 | ±0.1 | ±0.2 | ±0.1 | ±0.1 | ±0.2 | ±0.2 |
| C | ±0.2 | ±0.3 | ±0.5 | ±0.2 | ±0.3 | ±0.5 | ±0.5 |
| V | - | ±0.5 | ±1 | - | ±0.5 | ±1 | ±1 |
Finishing options
There is a wide variety of materials that can be machined using technology, ACE provides machining quotes for more than 30 engineering-grade plastic and metal materials.
| Images | Name | Applicable Materials | Colors | Can Be Applied with |
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Anodizing | Aluminum | Clear, black, grey, red, blue, gold | Media Blasting, Tumbling |
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Black Oxide | Steel, Stainless Steel | Black | Media Blasting, Tumbling, Passivation |
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Electroless Nickel Plating | Aluminum, Steel, Stainless Steel | / | Media Blasting, Tumbling |
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Electropolishing | Steel, Stainless Steel | / | / |
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Hand Polishing | Acrylic | / | Enhanced Cosmetic Appearance |
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Media Blasting | Aluminum, Steel, Stainless Steel, Brass, Bronze, Copper | / | All post processes, except Electropolish and Powder Coat |
![]() |
Nickel Plating | Aluminum, Steel, Stainless Steel | / | Media Blasting, Tumbling |
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Passivation | Steel, Stainless Steel | / | Black Oxide, Electroless Nickel Plating, Zinc Plating, Tumbling, Media Blasting |
![]() |
Powder Coating | Aluminum, Steel, Stainless Steel | Full Pantone or RAL color catalog | / |
From Concept to Production
CNC machining is an ideal manufacturing process whether you need a few parts or 10000+ units as end-used production parts. Here are the custom CNC services available at MoldPartner.
Prototype Machining
From MoldPartner, you can get your CNC machined prototypes done in days, super shot lead times allows you to verify the design fast.
- Instant quotes
- Instant DFM feedback
- Excellent quality
- Short lead time
Low-Volume Machining
CNC machining is a cost-efficient way to make certain types of parts in small volume or medium quantity. For example, 100 pieces to 1000 pieces.
- Lower cost
- Production-level quality
- Short lead time
- Test out the market before investment
Production Machining
Using CNC machines and robots is a best option for big volume production machining which allows us to avoid heavy labor. Decrease the cost significantly.
- Experienced engineers for DFM optimization
- A professional project manager working in your time zone
- First Article Inspection
- Guaranteed consistent quality
HOW TO WORK WITH US
Upload A CAD File
Upload your CAD file online & tell us important details about your project to get an instant guaranteed quote.
Design For Manufacturability
Manufacturing
Parts Are Shipped
What is Custom CNC Machining used for?
- Precision CNC
- Machining Parts
- Rapid prototyping
- Metal parts
- Performance plastics
- Low-mid-volume production runs
- Rapid Machining
When it comes to China CNC machining or custom CNC machining in general, our approach is: to provide highly flexible rapid volume manufacturing solutions that deliver superior parts, fast.
In addition to CNC machines, we have grinding machines, wire-cutting machines, and EDM machines that allow us to handle complex designs and produce precision parts with tolerances of 0.01mm, helping us meet client demands while maintaining quality and accuracy.
CNC Machined Part callery
In order to help you understand our CNc machining capabilities, here are some of our previous products, and demo parts designed by engineers. Moldpartner is flexible for all types of CNC machined parts. so if you are looking for a CNC machining
company for your projects, you need not look elsewhere!
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CNC Machining Workshop

CNC Machining Workshop

CNC Machining Workshop

CNC Machining Workshop

CNC Machining Workshop

CNC Machining Workshop

CNC Machining Workshop

CNC Machining Workshop

CNC Machining Workshop

CNC Machining Workshop










