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Precision

CNC Milling Services

For

Complex Geometries

Harnessing 3, 4, and 5-axis technology, RAPMAF delivers high-quality milled parts for any application. Get your free quote and expert DFM analysis within hours.

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ISO 9001 Certified | AS9100 Compliant | 5-Axis Experts

CNC Milling RAPMAF
CNC Milling RAPMAF
CNC Milling RAPMAF
CNC Milling RAPMAF
CNC Milling RAPMAF
Home / CNC Milling

What is CNC Milling?

CNC Milling RAPMAF

Shaping Innovation from a Solid Block

CNC (Computer Numerical Control) milling is a subtractive manufacturing process where a rotating cutting tool is precisely moved along multiple axes to remove material from a stationary workpiece. This process is ideal for creating parts with complex features like slots, holes, pockets, and intricate 3D contours.

Our Core

Milling Capabilities

CNC Milling RAPMAF

3-Axis & 4-Axis Milling

Perfect for parts with simpler geometries, prismatic shapes, and features on a single plane. Cost-effective and highly efficient.

CNC Milling RAPMAF

5-Axis Milling

Ideal for machining complex, organic shapes and contoured surfaces in a single setup, improving accuracy and reducing lead times.

CNC Milling RAPMAF

Quickly produce high-fidelity functional prototypes from production-grade materials for fit, form, and function testing.

CNC Milling RAPMAF

Low-Volume Production

Our streamlined processes make us the perfect partner for production runs from 10 to 10,000+ parts.

The RAPMAF

Manufacturing Advantage

CNC Milling RAPMAF

Expert DFM Feedback 

Every quote is backed by a free, detailed analysis from our engineers to optimize your design for better quality and lower cost.

CNC Milling RAPMAF

Uncompromising Quality

Our robust quality system, powered by CMMs and advanced inspection tools, ensures every part meets your exact specifications.

CNC Milling RAPMAF

Rapid Turnaround

With streamlined processes and a state-of-the-art facility, we offer some of the most competitive lead times in the industry.

CNC Milling RAPMAF

Vast Material Selection

We stock over 50 production-grade metals and plastics, and can source virtually any machinable material upon request.

Our In-Depth Technical Capabilities

Our facility is equipped with a fleet of modern CNC machines and a team of expert machinists. We are prepared to handle your most demanding projects, from simple brackets to mission-critical aerospace components.

Feature Specification / Description
Machining Processes
3, 4 & 5-Axis Milling, High-Speed Milling
Maximum Part Size
1200 x 800 x 500 mm (or custom size upon review)
Standard Tolerances
+/- 0.1 mm (or +/- 0.005 in). Tighter tolerances available upon review.
Tightest Achievable Tolerance
Up to +/- 0.005 mm (or +/- 0.0002 in)
Surface Roughness (Ra)
Standard: 3.2 μm (125 μin) As smooth as: 0.4 μm (16 μin)
Available Metals
Aluminum (6061, 7075), Stainless Steel (303, 304, 316L, 17-4PH), Steel (Alloy, Carbon), Titanium, Brass, Copper
Available Plastics
ABS, PC, Nylon (PA66), Delrin (POM), PEEK, Ultem, Acrylic (PMMA)
Quantities
Single Prototypes to 10,000+ Production Units
Standard Lead Time
5-10 Business Days. Expedited options available.
Quoting Time
Within 1-24 hours, including a free DFM analysis
CNC Milling RAPMAF

Step 1

Upload Your Design – Submit your

3D CAD file (STEP, IGES, X_T).

CNC Milling RAPMAF

Step 2

DFM & Approval – Our engineers provide DFM feedback. You approve the final quote & design.

CNC Milling RAPMAF

Step 3

Machining & Finishing- We program, machine, and finish your parts with precision.

CNC Milling RAPMAF

Step 4

Inspection & Delivery – We inspect the parts with CMM and ship them to your door.

From Design to Delivery

In 4 Simple Steps

Material Selection

We offer a vast inventory of metals and plastics, each chosen for its specific mechanical properties and milling performance. Explore some of our most popular options below.

CNC Milling RAPMAF

Aluminum (6061, 7075)

Excellent strength-to-weight ratio, great machinability, and corrosion resistance. Ideal for prototypes, aerospace, and consumer electronics.

CNC Milling RAPMAF

Stainless Steel (303, 304, 316L)

High strength, corrosion resistance, and sterile properties. Perfect for medical devices, food-grade equipment, and marine applications.

CNC Milling RAPMAF

Alloy & Carbon Steel

Exceptional hardness, strength, and wear resistance after heat treatment. Used for gears, shafts, and fixtures.

CNC Milling RAPMAF

Titanium & Brass

Titanium for its biocompatibility and extreme strength; Brass for its electrical conductivity and low-friction properties.

CNC Milling RAPMAF

Delrin (POM) & Nylon (PA66)

Excellent machinability, high stiffness, and low friction. Ideal for gears, bearings, and wear-resistant components.

CNC Milling RAPMAF

ABS & Polycarbonate (PC)

Good impact strength and dimensional stability. PC offers added toughness and optical clarity.

CNC Milling RAPMAF

PEEK & Ultem

High-performance thermoplastics with extreme temperature and chemical resistance. Used in demanding aerospace and medical applications.

CNC Milling RAPMAF

Acrylic (PMMA)

A rigid, transparent plastic with excellent optical clarity. A lightweight and shatter-resistant alternative to glass.

If your project requires a specific material not listed here, our engineering team can source it to meet your exact specifications.

Surface Finishing Options

Elevate the appearance and performance of your milled parts with our range of professional surface finishing options. Each finish is applied to precise standards to meet your functional and aesthetic goals.

CNC Milling RAPMAF

As-Machined

The standard finish with visible tool marks. Ideal for functional parts where aesthetics are not critical.

CNC Milling RAPMAF

Bead Blasting

Adds a uniform satin or matte texture, removing tool marks and creating a smooth, non-reflective finish.

CNC Milling RAPMAF

Anodizing (Type II & III)

Adds a corrosion-resistant, durable, and decorative ceramic layer to aluminum parts. Type III (Hardcoat) offers superior wear resistance.

CNC Milling RAPMAF

Powder Coating

A strong, durable, and corrosion-resistant paint-like finish available in a wide range of colors and textures.

CNC Milling RAPMAF

Polishing

Creates a smooth, reflective, mirror-like finish, improving surface aesthetics and cleanliness.

CNC Milling RAPMAF

Plating (Nickel, Chrome)

Adds a metallic layer to improve hardness, corrosion resistance, and electrical conductivity.

CNC Milling RAPMAF

Passivation

A chemical process for stainless steel that removes free iron, enhancing its natural corrosion resistance.

CNC Milling RAPMAF

Heat Treatment

Alters the mechanical properties of metals like steel to increase hardness and strength.

Industries We Serve

We assemble complex robotic arms,end-effectors, and control boxes,integrating motors,sensors, and wiring

We build diagnostic equipment and lab instruments in a controlled environment,adhering to strict quality and documentation standards.

We provide final assembly for high-end audio equipment, smart home devices,and other consumer products ready for market.

We assemble ruggedized enclosures,mil-spec connectors,and mission-critical hardware with full traceability and documentation.

Showcase of Our Milled Parts

Here is a selection of high-precision parts we have produced for clients using our advanced CNC milling centers. Each project demonstrates our commitment to tight tolerances, superior finishes, and complex geometries.

CNC Milling RAPMAF

Part Name

Material

Finish

Industry

:   Aerospace Structural Bracket

:   Aluminum 7075-T6

:   Anodizing Type II

:   Aerospace

CNC Milling RAPMAF

Part Name

Material

Finish

Industry

:   Medical Device Enclosure

:   Stainless Steel 316L

:   Bead Blasting

CNC Milling RAPMAF

Part Name

Material

Finish

Industry

:   Fluid Manifold Block

:   Brass C360

:   As-Machined

:   Industrial

CNC Milling RAPMAF

Part Name

Material

Finish

Industry

:   Robotic Mounting Plate

:   Delrin (POM)

:   As-Machined

:   Robotics

CNC Milling RAPMAF

Part Name

Material

Finish

Industry

:   Automotive Engine Component

:   Steel 4140

:   Heat Treatment

CNC Milling RAPMAF

Part Name

Material

Finish

Industry

:    Electronics Chassis

:   Aluminum 6061

:   Anodizing (Black)

CNC Milling RAPMAF

Part Name

Material

Finish

Industry

:   Optical Housing

:   Aluminum 6061

:   Anodizing (Black)

:   Optics

CNC Milling RAPMAF

Part Name

Material

Finish

Industry

:   Custom Aluminum Heatsink

:   Aluminum 6061-T6

:   Anodizing (Clear)

:   Electronics

CNC Milling RAPMAF

 Quality You Can Trust

Our AS9100 compliant quality system ensures full traceability and accountability. We utilize advanced CMMs, digital micrometers, and profilometers to verify every dimension. We provide comprehensive inspection documentation, including First Article Inspection (FAI) reports and Certificates of Conformance (CoC).

From Our

Learning Center

What is a CNC mill?

Question The Simple Answer What does CNC stand for? Computer Numerical Control. It means a computer uses numbers (coordinates) to control a machine. What is a

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What is the meaning of milling?

 passengers waiting for a delayed train. What is the milling process in manufacturing? It is a “subtractive” manufacturing process where a workpiece is held stationary

Read More »

What is a thread tap?

It’s a rite of passage for every apprentice machinist, mechanic, or engineer. It’s a sound you never forget: a sharp, sickening tink that echoes in

Read More »
Support format : jpeg, step, stp, sldprt, stl, dxf, ipt, x_t, x_b, 3dxml, catpart, prt, sat, 3mf, jt, webp, jpg, pdf, png, bmp, doc, zip, rar, dwg, xlsx, excel, igs, glb, gltf

We guarantee that all the files and pictures you upload will be kept confidential and no customer personal information will be disclosed.

We understand you may have questions about our 5-axis machining services. Here are answers to some common inquiries to help you get started.

The primary difference is the orientation of the spindle. Vertical mills are more common and versatile for most jobs, while horizontal mills are better suited for heavy, large parts and high-volume production due to superior chip evacuation.

While the hourly rate is higher, 5-axis milling can machine a complex part in a single setup. This eliminates the time and potential for error associated with multiple setups on a 3-axis machine, often resulting in a lower total cost.

Aluminum alloys like 6061 and 7075 are excellent for high-speed milling due to their good machinability and thermal conductivity. Softer plastics and brass also perform very well with high-speed toolpaths.

We use several strategies, including specialized low-stress fixturing, sharp cutting tools designed for plastics, and optimized toolpaths with high feed rates and low depths of cut to minimize heat buildup and prevent warping.

Climb milling cuts in the same direction the tool is rotating, producing a better surface finish and longer tool life. We primarily use climb milling, but may use conventional milling in specific situations to control part deflection.

 Yes. After milling, we use a multi-stage vapor polishing or buffing process to achieve a fully transparent, optically clear finish on acrylic and polycarbonate parts.

In addition to a 3D CAD file, material, and quantity, a 2D drawing highlighting the critical features and tolerances is extremely helpful for 5-axis work. This ensures we focus on what matters most to your design.

A general rule of thumb is that the depth of a pocket should not exceed 4-6 times the diameter of the cutting tool. For deeper pockets, we may need to use specialized long-reach tools, which can impact cost.

Common mistakes include designing sharp internal corners (always add a radius), unnecessarily tight tolerances, and very thin walls. Our DFM feedback will help you identify and correct these issues.

We recommend designing with a corner radius of at least 1/8" (3mm) to allow for the use of robust standard tooling. Smaller radii are possible but will increase machining time and cost.

Yes, we use a process called thread milling to create highly accurate internal and external threads of various sizes. This is often more precise than tapping for critical applications.

For large parts, we use temperature-controlled environments, in-process probing to check dimensions during machining, and stress-relieving procedures for materials prone to warping. Final inspection is done on our large-format CMMs.

A fixture is a custom work-holding device designed to securely hold a part during milling. Proper fixture design is critical for accuracy, repeatability, and preventing part damage, especially for complex or delicate components.

Yes, we work with certified partners to provide a wide range of heat treatment services for steel alloys. This includes hardening, tempering, and annealing to achieve the desired mechanical properties after milling.

Ready to Start Your Project?

Get a free quote and design for manufacturability analysis,

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Need Assistance? We're Here for You.

lf you have any questions or need assistance, our team is ready to provide support 24/7. Reach out to us through any of the methods below.

Support format : jpeg,step,stp,sldprt,stl,dxf,ipt,x_t,x_b,3dxml,catpart,prt,sat,3mf,jt,webp,jpg,pdf,png,bmp,doc,zip,rar,dwg,xlsx,excel,igs,glb,gltf