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

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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.

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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.

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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.

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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.

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Quality Assurance

As an ISO 9001:2015 certified manufacturer, we provide our clients with RoHS, SGS certifications, complete material certifications, and detailed inspection reports.

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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.

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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
Designation	Description	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
	Anodizing	Aluminum	Clear, black, grey, red, blue, gold	Media Blasting, Tumbling
	Black Oxide	Steel, Stainless Steel	Black	Media Blasting, Tumbling, Passivation
	Electroless Nickel Plating	Aluminum, Steel, Stainless Steel	/	Media Blasting, Tumbling
	Electropolishing	Steel, Stainless Steel	/	/
	Hand Polishing	Acrylic	/	Enhanced Cosmetic Appearance
	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
	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	/

*Additional finishing options include chromic acid anodizing, cadmium plating, copper plating, titanium anodizing (blue anodizing), gold plating, silver plating, and more.

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

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Upload A CAD File

Upload your CAD file online & tell us important details about your project to get an instant guaranteed quote.

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Design For Manufacturability

Free Design for Manufacturability (DF) analysis to suggest design improvements, finishes and processing techniques that are best suited for your project.

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Manufacturing

One-stop-shop service that ensures that parts remain consistent in their high quality from start to end with excellent finishes to convey aesthetics, ergonomics, and protection.

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Parts Are Shipped

Doorstep Delivery- Custom manufactured parts areshipped and delivered to your doorstep in as fast as 3 days.

Get Your Online CNC Quote

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!

CNC Machining Parts

Learn how Kepler rapidly went from a sketch on a napkin to a satellite in space with Protolabs Network CNC machining.

CNC Machining Parts 2