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Custom CNC Milling Services | Multi-axis CNC milling

Rapid Model offers custom CNC milling services with tight tolerances controlled within ±0.01 mm. Our machining capabilities cover a variety of materials, including aluminum CNC milling, steel CNC milling, and engineering plastics. With multiple 3-axis, 4-axis, and 5-axis CNC milling machines, we provide both custom CNC milling for prototypes and small-batch production starting from 60 pieces, while also supporting large-scale industrial production.

One-stop CNC milling solutions

CNC milled parts – Prototyping with delivery in as fast as 2 days.

Repeatability:±0.005mm~±0.008 mm

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Custom CNC Milling Services

Our Custom CNC Milling Services

Customizing the right 3-axis, 4-axis, or 5-axis CNC milling service is crucial for maximizing your return on investment.

3-Axis CNC Milling

3-Axis CNC Milling

Our 3-axis milling machines have a positioning accuracy of ±0.01mm. With our experienced engineering team, we can consistently maintain tolerances within ±0.01mm, and in special cases, our engineers can even achieve tolerances as tight as ±0.005mm.

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4-Axis CNC Milling Services

4-Axis CNC Milling Services

When your CNC components require machining of complex angled surfaces, helical grooves, and curved contours, choosing custom 4-axis CNC milling services can be a more cost-effective and efficient alternative to using a 5-axis milling machine.

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5-Axis CNC Milling Services

5-Axis CNC Milling Services

With our 5-axis milling machines and experienced engineering team, we can maintain tolerances within ±0.005mm. Although 5-axis milling comes at a higher cost, it allows for machining far more complex CNC components.

Lean More

Our CNC milling workshop.

Rapid Model’s CNC milling workshop is equipped with over 100 machines,
Our skilled professionals deliver high-quality CNC milled parts precisely tailored to your specifications.

5-Axis CNC Milling
CNC Milling workshop
CNC Milling center
CNC Milling center
Design Team
Design Team

Why Choose Our Custom CNC Milling Services

At Rapid Model, we strive to deliver the best service and ensure every product meets the highest quality.

Full-process transparency

We provide customers with real-time photos or videos during machining, allowing them to monitor every stage of production. Without the customer’s permission, we ensure strict confidentiality from drawings to final delivery at every step.

Rapid Prototyping

Our rapid CNC prototyping services accelerate your product development cycle and shorten time-to-market, with low-volume orders starting from as few as 1–10 pieces and delivery in as fast as 1–3 days.

Low-volume production:

We accept orders starting from as low as 60 pieces. However, considering customer needs, we can be flexible with this minimum requirement to ensure a satisfying service experience.

Multiple Materials and Processes

A wide selection of materials, including aluminum, stainless steel, titanium, brass, plastics, and more. Diverse machining capabilities, such as milling, turning, 5-axis machining, and sheet metal fabrication.

Secondary Operations

Comprehensive finishing services including deburring, polishing, anodizing, plating, and painting.

Dedicated Customer Support

Our account managers maintain communication with you throughout the entire process. If you encounter any issues, you can reach out at any time, and your manager will respond promptly.

CNC Milling Tolerances and Accuracy

Rapid Model can typically achieve the following standards, while more complex applications will need to be evaluated by our engineers.

Category 3-Axis CNC Milling 4-Axis CNC Milling 5-Axis CNC Milling
Positioning Accuracy ±0.05 mm ~ ±0.01 mm ±0.05 mm ~ ±0.01 mm ±0.01 mm ~ ±0.008 mm
Repeatability ±0.008 mm ~ ±0.01 mm ±0.008 mm ~ ±0.01 mm ±0.005 mm ~ ±0.008 mm
CNC Milling Tolerances 0.05 mm ~ ±0.01 mm 0.02 mm ~ ±0.01 mm 0.01 mm ~ ±0.005 mm
Size Range ≤ 300 mm ≤ 300 mm ≤ 300 mm
Machinable Surfaces Single setup, XYZ only Added rotation axis for angled features Full-surface multi-axis machining
Linked accuracy - - Circular trajectory error within a 100mm radius ≤ 20μm
Typical Applications Flat parts, outer contours Angled holes, curves, engraving Complex surfaces, high-precision molds

Precision CNC Milling Services

Rapid Model provides high-precision CNC milling services with a full range of process options.

Rapid Quotation:

Get feedback within 2 hours, including a DFM (Design for Manufacturability) report.

Diverse process selections:

Our precision milling services cover a full range of advanced processes, including face milling for superior surface finish, contour milling for complex curves and profiles with tight tolerances, end milling for slots, cavities, and fine details, and milling-drilling combinations for efficient multi-operation machining of molds and mechanical parts.

One-stop CNC milling solutions:

With these capabilities, we deliver high-quality, cost-effective solutions tailored to your project’s exact requirements.

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Precision CNC Milling Services

CNC Milling Material Reference

We work with a wide range of materials to meet your specific requirements

Metals

Aluminum, Steel, Stainless Steel, Titanium, Brass, Copper

Plastics

ABS, Nylon, PEEK, Delrin, Acrylic, Polycarbonate

Exotic Alloys

Inconel, Monel, Hastelloy, Kovar, Tool Steels

Composites

Carbon Fiber, G10, Micarta, Fiberglass

Quality Assurance

Precision and quality are at the core of everything we do

Commitment to Excellence

At Rapid-Model, quality is not just a process - it's our culture. We implement rigorous quality control measures at every stage of production:

  • First Article Inspection (FAI) for all new parts
  • In-process inspections during machining
  • Final inspection with CMM and advanced metrology equipment
  • Detailed inspection reports with dimensional data
  • Material certification and traceability
  • ISO 9001:2015 certified quality management system

Our commitment to quality ensures that every part we produce meets or exceeds your specifications and expectations.

View Quality Certifications
CMM measurement

CNC Milling Surface Finishing

We offer a variety of surface finishing options to give CNC milled parts better performance and appearance.

Name Color Material Description
Anodizing
Anodizing		 Clear, Black, Red, Blue Aluminum, Titanium Electrochemical process that improves corrosion resistance, wear resistance, and adds decorative color.
Powder Coating
Powder Coating		 Wide color range Metals Dry powder applied electrostatically and cured with heat, providing strong, durable, and uniform coating.
Electroplating
Electroplating		 Silver, Gold, Nickel, Chrome Steel, Copper, Brass Thin metallic layer deposited to improve surface hardness, corrosion resistance, and aesthetics.
Polishing
Polishing		 Shiny, Mirror-like Metals & Plastics Mechanical or chemical process to smooth the surface, enhance appearance, and reduce friction.
Bead Blasting
Bead Blasting		 Matte, Satin Aluminum, Stainless Steel Blasting small glass beads at high pressure to create a uniform, non-reflective finish.
Brushing
Brushing		 Satin, Silver-gray Aluminum, Stainless Steel A linear polishing process that gives the material a fine directional texture and aesthetic look.
Black Oxide
Black Oxide		 Black Steel, Stainless Steel Chemical conversion coating for mild corrosion resistance and improved appearance.
Passivation
Passivation		 Natural Metallic Stainless Steel Chemical treatment that removes free iron and enhances corrosion resistance without changing color.
Post-processing
Post-processing		 Custom colors Metals A simple and fast method to remove tool marks left after CNC machining, making it an economical and efficient choice.
Heat Treatment
Heat Treatment		 Dark Gray, Black Steel, Titanium Thermal process to enhance hardness, wear resistance, and fatigue life of CNC machined parts.

What is Precision CNC Milling?

Advanced technology and expertise to handle your most challenging projects

Advanced technology

Precision CNC milling is an advanced manufacturing process that delivers accuracy and tolerances far beyond standard CNC milling. Designed to meet the growing demands of modern industry, it is highly valued in aerospace, medical, and automotive applications. While the costs are higher compared to conventional methods, its most important advantage is the ability to ensure stability and consistency: dimensional variation in batch production can be as low as 0.002 mm, and repeatability across multiple runs is virtually flawless. This guarantees that every part not only meets strict dimensional and geometric requirements but also achieves exceptional surface quality.

Our experienced team of machinists and engineers ensures that every project is executed with precision and efficiency, meeting the client's technology standards.

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Precision CNC Milling Services

Advanced Technology

Investing in the latest machining technology for superior results

5-Axis Machining

Simultaneous 5-axis capabilities for complex geometries and reduced setups.

High-Speed Machining

Advanced HSM techniques for faster material removal and superior surface finishes.

Precision Metrology

State-of-the-art CMMs and inspection equipment for micron-level accuracy.

Client Testimonials

What our customers say about working with Rapid-Model

"Rapid-Model has been our go-to CNC machining partner for over 5 years. Their technical expertise and commitment to quality have been instrumental in bringing our products to market. The team consistently delivers precision parts on time, even with our most challenging requirements."
Michael Johnson

Engineering Director, AeroTech Solutions

"We switched to Rapid-Model for our medical device components and have been extremely impressed. Their attention to detail, quality control processes, and responsiveness set them apart. They've helped us reduce manufacturing costs by 22% while improving part quality."
Sarah Williams

Production Manager, MedInnovate Inc.

Frequently Asked Questions

Common questions about our CNC milling services

What file formats do you accept for CNC machining?
We accept all major CAD file formats including STEP, IGES, Parasolid, and SolidWorks native files. For 2D drawings, we accept PDF and DXF formats. Our engineers will review your files and confirm manufacturability.
What tolerances can you achieve with CNC milling?
Our standard machining tolerance is ±0.05mm. For precision features, we can achieve tolerances down to ±0.01mm depending on part size, geometry, and material. We'll recommend appropriate tolerances during design review.
What is your typical turnaround time?
For prototypes, typical lead time is 5-10 business days. For production runs, lead times range from 2-4 weeks depending on quantity and complexity. We offer expedited services for urgent projects - contact us for availability.
Do you provide material certifications?
Yes, we provide full material certifications including mill test reports (MTRs) for all materials used in your project. This is standard for aerospace and medical applications and available upon request for all projects.
Can your custom CNC milling services be offered at a discount
Our custom CNC milling services are priced based on each customer’s project, which already ensures the most cost-effective solution. In today’s era of price transparency, our tailored services remain among the most competitive in the industry. If someone offers you a lower price, it inevitably means they have compromised on quality control.

Ready to Start Your CNC Milling Project?

Get a free quote within 24 hours. Upload your CAD files and specifications to receive pricing and lead time.

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CNC milling case

At Rapid Model, We combine high-precision machining with exceptional customer service to ensure the smooth progress of every project.
Our CNC milling services provide reliable support to help drive your project forward.