CNC milling service

Our CNC milling services allow you to create industrial-grade parts and components with automated speed and precision.

What is CNC milling?

CNC milling is a computer-controlled subtractive machining process that uses rotating cutting tools to remove material from a solid, stationary workpiece to create custom-designed parts. During milling, the workpiece is cut along multiple axes to obtain a variety of shapes and geometries.

Our CNC milling services are simple: Upload your CAD files to our online instant quote system to get a quote, work with us to optimize your design and select your materials, then get your project into production quickly and efficiently.

Our CNC milling services

Our CNC machining capabilities include both 3-axis, and 5-axis mills:

3 Axis CNC Milling

A profitable and efficient solution to your CNC milling needs! We ensure the machining of parts with complex geometrical shapes, including undercut features, threaded holes, sharp edges, and planar profiles. Complete multiple operations through effective integration with an automatic tool changer. We can also design 3-axis milling centers to meet the unique requirements of each client.

4 Axis CNC Milling

Get more complex CNC milled parts with our 4-axis CNC milling. We consistently produce precise and accurate results, with greater control and more flexibility, even with complex shapes. Ensure cost-effective machining of angled features that are rather impossible with 3-axis machines. With more power, greater control, and higher precision, 4-axis milling is your ideal solution.

5 Axis CNC Milling

Machine complex custom CNC milled parts with a single setup. Our 5-axis CNC milling machines save time, improve efficiency, and reduce cost, ensuring that you meet market demands faster and cost-effectively. We can reach higher cutting speeds without excessive pressure on the cutter. Get rapid prototypes and low-volume production parts with better surface finishes.

Why Choose Us for CNC Milling Service

At Rapid-MFG, we are committed to helping you reach your manufacturing goals. We constantly strive for effective solutions through our progressive technological approaches and machining techniques. Our CNC milling services ensure you get highly precise prototypes and production parts with superior quality.

  • Excellent design precision
  • Production consistency
  • Suitability for niche products
  • Established technology
  • Wide variety of materials
  • Scalability
  • Speed
  • Upfront design costs
  • Limited part geometry
  • Potential unused material waste

Design considerations

The Rapid-MFG CNC milling process takes your project from prototype to production quickly and simply. Optimize your milled parts with the following design considerations, material choices, and finishing and post processing options:

CNC milling general process information

3-Axis Milling 5-Axis Milling
Maximum part size​ 1800 x 1000 x 500 mm 70.9 x 39.4 x 19.7 in 1000 x 900 x 600 mm 39.4 x 35.4 x 23.6 in
Minimum part size 12.7 x 12.7 x 12.7 mm 0.5 x 0.5 x 0.5 in 12.7 x 12.7 x 12.7 mm 0.5 x 0.5 x 0.5 in
Minimum feature size Ø 1 mm Ø 0.039 in Ø 1 mm Ø 0.039 in
Standard tolerance Metals: +/-0.13 mm (0.005 in) Plastics: +/-0.20 mm (0.008 in)
Minimum wall thickness Recommended size: 0.8 mm (0.031 in) for metals and 1.5 mm (0.059 in) for plastics Feasible size: 0.5 mm (0.019 in) for metals and 1.0 mm (0.039 in) for plastics
Holes Recommended size: Diameter: standard drill bit sizes Depth: 4 x diameter Feasible size: Diameter: Ø 0.5 mm (0.019 in) Depth: 8 x diameter
Threads Recommended size: Size: M6 or larger Length: 3 x diameter Feasible size: Size: M2.5
Lead time As low as 8 days for less than 50 parts As low as 10 days for less than 50

CNC Milling Materials

We stock more than 30 production-grade plastic and metal materials that are suitable for various part applications and industries.

CNC milling materials
PlasticAluminumStainless SteelOther SteelOther Metal
ABS2024303Mild steelBrass
Nylon 66061304Alloy steelCopper
Acetal (Delrin)6082316Tool steelTitanium
Polycarbonate705017-4 Contact us for additional
metal machining options
PTFE (Teflon)    
Nylon 30%GF    

Surface Finishes for CNC Milling

Gain access to quality surface finishing for custom CNC milling parts to remove aesthetic flaws and improve the appearance of your products. We also provide rigid protection and additional resistance and strength to your parts through superior surface finishes.

 AnodizingAnodizing improves corrosion resistance, enhancing wear resistance and hardness, and protecting the metal surface. Widely used in mechanical parts, aircraft, and automobile parts, precision instruments, etc.AluminumClear, black, grey, red, blue, gold.Smooth, matte finish.Learn More>>

Bead Blasting

Bead blasting results in parts with a smooth surface with a matte texture. Used mainly for visual applications and can be followed by other surface treatments.

ABS, Aluminum, Brass, Stainless Steel, Steel

n/aMatteLearn More>>
 Powder CoatingPowder coating is a type of coating that is applied as a free-flowing, dry powder. Unlike conventional liquid paint which is delivered via an evaporating solvent, powder coating is typically applied electrostatically and then cured under heat or with ultraviolet light.Aluminum, Stainless Steel, Steel

Black, any RAL code or Pantone number

 Gloss or semi-gloss

Learn More>>

 ElectroplatingElectroplating can be functional, decorative or corrosion-related. Many industries use the process, including the automotive sector, in which chrome-plating of steel automobile parts is common.

Aluminum, steel, stainless steel




Smooth, glossy finish


Learn More>>


Polishing is the process of creating a smooth and shiny surface, either through physical rubbing of the part or by chemical interference. The process produces a surface with significant specular reflection, but in some materials is able to reduce diffuse reflection.

Aluminum, Brass, Stainless Steel, Steel



Learn More>>



Brushing is a surface treatment process in which abrasive belts are used to draw traces on the surface of a material, usually for aesthetic purposes.

ABS, Aluminum, Brass, Stainless Steel, Steel


Learn More>>

Ready to make your parts with Rapid-MFG?

Use our quoting platform for quick quotes on production parts and prototypes.

Gallery of CNC Milling Parts

Check out our extensive gallery that shows precision milled prototypes and parts from our valued customers.

CNC milling applications

From single, speciality parts to full production runs, CNC milling can be used to create a variety of industrial parts with applications that include:


Manufacture parts with complicated cuts and different angles using a variety of cutting, drilling, and lathing tools.

Niche manufacturing

CNC milling is capable of creating a range of niche, durable metal or plastic products that alternative manufacturing processes cannot.

Medium-to-high-volume production

The CNC milling process is particularly useful for high-volume manufacturing runs, offering automated speed and cost benefits.

Metal fabrication

CNC milling is a safe, effective way of creating high quality metal parts with exceptional tolerance levels.

Hybrid manufacturing

CNC milling is not just a process suited to working with metals: molded and 3D printed parts can also be machined.

Rapid prototyping

The CNC milling process is fast, automated, and useful for the production of prototype parts.

Our CNC Milling for Various Industrial Applications

CNC milling parts have seen significant use in a variety of industries. With our advanced facilities and refined CNC milling technologies, we can create precision and quality CNC milled parts in a rapid manner.


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Get Your CNC Milling Project Started Today

With a range of finishing services to choose from and quality guaranteed with our inspection services, you can trust you’ll receive quality parts every time. Once you upload your 3D CAD file to our instant quote system or send it directly to us, one of our customer service engineers will check your design for manufacturability to ensure the part will meet your expectations and budget requirements.

Explore CNC machining news and industry updates

Find industry news, resources, insight into the CNC milling process, and more, on the Rapid-MFG blog:

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