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CNC Milling

CNC (computer numerical control) milling, one type of CNC machining process, is a process that uses rotary multi-point cutters to remove material into a CNC machined part. It is also one of the most commonly used methods for machining custom parts with precise tolerances. CNC milling has a rotating cylindrical head and a number of chip slot milling cutters known as an end milling cutter. It can move along a different axis, used to process narrow and long spaces, grooves, contours, etc.

At X Rapid Technologies, our CNC milling service is generally employed for making one-off CNC milling prototypes within days as well as low-volume CNC machined parts in plastic or metal materials.

Tolerances of CNC milling services

Tolerances depend on the geometry of CNC machined parts. There is a tolerance of +/- 0.05 mm in general. Higher tolerances are available on request.

Finishing for CNC milling prototypes

CNC milling prototypes can be as machined, de-burred, sanded, polished, painted, silk screened, electroplated, anodized, etc. It all depends on your needs. All those surface treatments available to CNC machined parts can also be applied to CNC milling prototypes.

Advantages of CNC milling services

· Excellent adaptability and flexibility: complex parts and those with difficult-to-control sizes can be effortlessly produced, such as mold parts, enclosure parts, etc.

· Machining capacity greater than ordinary machines: CNC milling can produce parts that cannot be machined by ordinary machines.

· Don’t need to change fixture location frequently: by using the same fixture location, we can finish producing the multi-process processing CNC machined parts.

· Stable and reliable quality: CNC milling can avoid manual operation errors.

Applications of CNC milling services

CNC milling has a wide range of applications in machining plane parts, parts with variable bevel angles, and curved-face parts. In prototyping, CNC milling is used to create functional prototypes. CNC milling prototypes are widely employed in automotive, commercial electronics, industrial design, medical devices, aerospace, and aircraft industries. 

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Material Options for CNC Milling Service


ABS, PMMA (acrylic), PP, PC, POM (Delrin), PA (Nylon), ABS+PC, PVC, PBT, CPVC, etc


Aluminum, copper, brass, zinc, stainless steel, steel alloys, magnesium, etc

Why Choose X Rapid Technologies for CNC Milling Services?

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Reasonable Price

Custom solutions for custom parts no matter how much your budget is. No project is big or small.

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ISO 9001:2015 Certified Quality

With ISO 9001:2015 certification, we have an ongoing commitment to delivering high-performance CNC milling prototypes and low-volume parts.

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Fast Delivery

We work with fast turnaround times. Even very tight lead time can be met on time. Production can be finished within 3 to 7 days and shipped globally.

CNC Milling Service FAQs

To make CNC milling prototypes, please send us files in CAD, STP, STEP, IGS, or X_T format.

The lead time for creating a one-off CNC milling prototype is usually no less than 3 days. It varies for different projects. We will estimate the lead time during the quoting period.

Sure. We have served the international markets for over 10 years and delivered over 100,000 CNC machined parts globally. Witnessing numerous CNC milling prototypes going to the global markets is an honor and delight for us.

In addition to CNC milling service, we majorly provide CNC turning, CNC cutting, CNC grinding services to process all kinds of CNC machined parts.

Of course. You can look at our CNC machined parts on our Case Studies page. Or contact us for some pictures of CNC machined parts.