Custom CNC Machining Solutions

Different tailored CNC machining services save time for your projects while meeting your specific requirements and industry standards.

Precision CNC Milling

CNC Milling services

CNC milling services for parts ranging from simple to complex geometries, with tolerances as tight as ±0.01 mm. Ideal for automotive and industrial applications.

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CNC Turning

CNC Turning & Lathe Work

We offer custom precision turning services equipped with advanced live tooling capabilities. Ideal for machining shafts, fittings, and rotational components.

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Sheet metal processing

5-Axis Machining

We offer 5-axis CNC machining services, supporting both full 5-axis simultaneous and 3+2 axis machining, making it ideal for manufacturing complex parts.

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CNC Machining Tolerances

Our tailored CNC machining services typically meet the following standards, while more complex applications will require evaluation by our engineers.

Item Specification
Maximum Milling Part Size 1524 mm × 1016 mm × 508 mm (60" × 40" × 20")
Maximum Turning Part Size Length 1524 mm (60"), Diameter 762 mm (30")
Shortest Lead Time 3 working days
General Tolerance Metal: ±0.127 mm (±0.005"); Plastic/Composites: ±0.254 mm (±0.010")
Precision Tolerance Based on drawings and GD&T, tolerances as tight as ±0.025 mm (±0.001") - ±0.01 mm (±0.0004")
Threads and Tapped Holes Supports all standard threads; custom threads require manual quote review
Edge Conditions Sharp edges are deburred by default
Surface Finish Standard as-machined: Ra ≥ 125 μin; other finishes available on request
Custom services available Prototype production: 1–10 pieces;Low-volume orders: 11–500 pieces;Mass production: ≥501 pieces;

Our CNC Machining Factory

We provide clients with high-quality CNC machined parts and conduct strict quality inspections.

With multiple 3-axis to 5-axis CNC machines and dozens of engineers, we ensure high-quality CNC machined parts. Our custom CNC machining services also allow clients to monitor the project progress at any time.

We have dedicated account managers who follow your project throughout the process, allowing clients to communicate at any time and ensuring CNC machined parts are delivered efficiently and promptly.

Our custom CNC machining services include free sturdy packaging designed to protect clients’ CNC machined parts from damage during transportation.

Partnering with us means you will receive reliable precision parts. Contact us now to start your project!

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CNC machining

Watch the video to learn more about us

Rapid Model is a renowned CNC machining company in China, with our own self-operated factory in Shenzhen. We have a comprehensive quality management system and a complete equipment setup. This is why we are able to offer one-stop solutions to our customers.
Upload your drawings, and receive a quick response and start production within 2-7 hours. CNC machined parts are available at factory prices within 2-5 days.


About Us
CNC Metal Parts

CNC Metal Parts Manufacturing

In general, the tolerance requirements for metal machining are carried out in accordance with the ISO 2768 standard. For precision machining, we can achieve a tolerance of ±0.01mm.

All you need to do is upload your CAD files and specifications, and our experienced engineers will manage the entire process, from prototyping to full-scale production.

With reliable, efficient, and precise CNC machining services, we bring your designs to life and look forward to collaborating with you.

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Material knowledge

Browse our material library and select from the sidebar to view properties and characteristics

Aluminum

aluminum Parts

Aluminum is a versatile, lightweight metal favored in CNC machining for its excellent machinability, strength-to-weight ratio, and corrosion resistance. It provides high precision and smooth finishes, ideal for intricate components in automotive, aerospace, and electronics.

Color
Silver White
Surface Treatment
Anodizing, electroplating, powder coating
Price Range
$$$ (Medium)
Build Time
3 to 5 Business Days
Services
CNC Milling, CNC Turning
Subtypes
Aluminum 6061, Aluminum 7075, Aluminum 5052, Aluminum 2024, Aluminum 6063
Tensile Strength
70-700 MPa (depending on alloy)
Density
2.7 g/cm³

Copper

Copper

Copper is known for its excellent electrical and thermal conductivity. It is often used in electrical components, heat exchangers, and various industrial applications. Copper offers good machinability and corrosion resistance.

Color
Reddish Brown
Surface Treatment
Electroplating, polishing, patination
Price Range
$$$$ (High)
Build Time
4 to 6 Business Days
Electrical Conductivity
100% IACS (International Annealed Copper Standard)
Thermal Conductivity
401 W/(m·K)
Common Applications
Electrical wiring, heat exchangers, roofing, plumbing

Bronze

Copper-tin alloy

Bronze is an alloy consisting primarily of copper, commonly with about 12-12.5% tin and often with the addition of other metals and sometimes non-metals. It is known for its hardness, durability, and resistance to corrosion.

Color
Reddish Gold
Surface Treatment
Polishing, lacquering, patination
Price Range
$$$$ (High)
Build Time
5 to 7 Business Days
Common Alloys
Phosphor bronze, aluminum bronze, silicon bronze
Typical Applications
Bushings, bearings, marine hardware, sculptures

Steel

Gear parts

Steel is an alloy of iron and carbon, and sometimes other elements. Because of its high tensile strength and low cost, it is a major component used in buildings, infrastructure, tools, ships, machines, appliances, and weapons.

Color
Silver Gray
Surface Treatment
Galvanizing, painting, powder coating, plating
Price Range
$$ (Medium)
Build Time
4 to 6 Business Days
Carbon Content
0.05% to 2.1% by weight
Tensile Strength
400-2500 MPa (depending on grade and treatment)

Alloy Steel

Alloy Steel

Alloy steel is steel that is alloyed with a variety of elements in total amounts between 1.0% and 50% by weight to improve its mechanical properties. Common alloying elements include manganese, nickel, chromium, molybdenum, vanadium, silicon, and boron.

Color
Silver Gray
Surface Treatment
Case hardening, nitriding, chrome plating
Price Range
$$$ (Medium to High)
Build Time
5 to 8 Business Days
Common Alloying Elements
Manganese, nickel, chromium, molybdenum, vanadium
Applications
Gears, shafts, connecting rods, machinery parts

Stainless Steel

Stainless Steel

Stainless steel is known for its excellent corrosion resistance and strength. It is widely used in medical devices, food processing equipment, marine applications, and architectural components due to its durability and aesthetic appeal.

Color
Silver Gray
Surface Treatment
Polishing, passivation, brushing, electroplating
Price Range
$$$$$ (Premium)
Build Time
5 to 8 Business Days
Chromium Content
Minimum 10.5%
Common Grades
304, 316, 430, 410, 17-4 PH

Magnesium

Magnesium

Magnesium is the lightest structural metal, offering an excellent strength-to-weight ratio. It has good machinability and damping capacity, making it suitable for applications where weight reduction is critical.

Color
Silver White
Surface Treatment
Anodizing, coating, plating
Price Range
$$$$ (High)
Density
1.74 g/cm³ (lightest structural metal)
Common Applications
Aerospace components, automotive parts, electronics housings

Brass

Brass

Brass is a copper-zinc alloy known for its excellent machinability, corrosion resistance, and attractive golden appearance. It is commonly used in fittings, valves, gears, and decorative parts, making it a versatile material for both functional and aesthetic applications.

Color
Golden Yellow
Surface Treatment
Polishing, Plating, Sandblasting
Price Range
$$ (Medium)
Build Time
3 to 5 Business Days
Services
CNC Milling, CNC Turning
Subtypes
C260 (Cartridge Brass), C360 (Free-Cutting Brass)
Tensile Strength
250–500 MPa (depending on grade)
Density
8.4–8.7 g/cm³

ABS

Acrylonitrile Butadiene Styrene

ABS (Acrylonitrile Butadiene Styrene) is a common engineering plastic known for its toughness, dimensional stability, and ease of machining. It is widely used in prototypes, enclosures, and consumer products due to its cost-effectiveness and versatility.

Color
Black, White, Beige
Surface Treatment
Polishing, Painting, Texturing
Price Range
$ (Low)
Build Time
2 to 4 Business Days
Services
CNC Milling, CNC Turning
Subtypes
General ABS, Flame Retardant ABS
Tensile Strength
40–50 MPa
Density
1.04 g/cm³

Nylon (PA)

Nylon (PA)

Nylon is a versatile engineering plastic known for its strength, wear resistance, and toughness. It is often used in gears, bearings, and mechanical components, offering good machinability and chemical resistance.

Color
White, Black, Natural
Surface Treatment
Polishing, Dyeing
Price Range
$$ (Medium)
Build Time
3 to 5 Business Days
Services
CNC Milling, CNC Turning
Subtypes
Nylon 6, Nylon 66, Glass-Filled Nylon
Tensile Strength
40–90 MPa
Density
1.14 g/cm³

Polycarbonate (PC)

Polycarbonate (PC)

Polycarbonate (PC) is a transparent engineering plastic known for its excellent toughness, impact resistance, and dimensional stability. It is ideal for lenses, protective covers, and electronic components.

Color
Transparent, Black, Clear
Surface Treatment
Polishing, Hard Coating
Price Range
$$$ (Medium to High)
Build Time
3 to 5 Business Days
Services
CNC Milling, CNC Turning
Subtypes
Standard PC, Glass-Filled PC
Tensile Strength
55–75 MPa
Density
1.20 g/cm³

PEEK

PEEK (Polyetheretherketone)

PEEK (Polyetheretherketone) is a high-performance engineering plastic known for its excellent mechanical strength, heat resistance, and chemical stability. It is often used in aerospace, medical, and automotive applications.

Color
Beige, Brown
Surface Treatment
Polishing, Coating
Price Range
$$$$ (High)
Build Time
5 to 7 Business Days
Services
CNC Milling, CNC Turning
Subtypes
Standard PEEK, Glass-Filled PEEK, Carbon-Filled PEEK
Tensile Strength
90–100 MPa
Density
1.30 g/cm³

PTFE (Teflon)

PTFE (Teflon)

PTFE (Teflon) is a highly chemical-resistant plastic with very low friction and excellent electrical insulation properties. It is commonly used in seals, gaskets, and non-stick applications.

Color
White
Surface Treatment
Polishing
Price Range
$$$ (Medium to High)
Build Time
3 to 5 Business Days
Services
CNC Milling, CNC Turning
Subtypes
Virgin PTFE, Filled PTFE
Tensile Strength
20–35 MPa
Density
2.2 g/cm³

POM (Acetal)

POM (Acetal)

POM (Acetal, Delrin) is a strong engineering plastic with excellent stiffness, low friction, and good wear resistance. It is widely used in precision components such as gears, bearings, and automotive parts.

Color
White, Black
Surface Treatment
Polishing
Price Range
$$ (Medium)
Build Time
2 to 4 Business Days
Services
CNC Milling, CNC Turning
Subtypes
Homopolymer POM, Copolymer POM
Tensile Strength
60–70 MPa
Density
1.41 g/cm³

PMMA (Acrylic)

PMMA (Acrylic)

PMMA (Acrylic) is a transparent thermoplastic with excellent optical clarity and weather resistance. It is commonly used as a lightweight glass alternative for lenses, displays, and windows.

Color
Transparent, Clear, Colored
Surface Treatment
Polishing, Painting
Price Range
$$ (Medium)
Build Time
2 to 4 Business Days
Services
CNC Milling, CNC Turning, Laser Cutting
Subtypes
Cast Acrylic, Extruded Acrylic
Tensile Strength
60–70 MPa
Density
1.18 g/cm³

Note: The materials above are for reference only. Please reach out to us for more customized options! We are committed to fulfilling all your material requirements!

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Get an instant quote or speak with our CNC machining experts about your specific requirements.

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CNC Machining Surface Treatment

We offer a variety of surface finishing options to give CNC machining 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.

Why Choose Our Custom CNC Machining Services?

Why choose Rapid Model for CNC parts manufacturing? Because Rapid Model has never let its customers down.

Small batch manufacturing process of CNC parts

Low Volume Production

OAlthough our minimum order quantity starts at 60 pieces, we always put our customers at the core. We can adjust flexibly based on their specific needs.

CNC parts display

Logistics & Packaging

We understand the importance of logistics. Partnering with over 20 logistics companies, we ensure your CNC parts are delivered safely and quickly. At the same time, we use durable and reliable packaging to prevent any damage or loss of performance during transit.

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Quality Inspection Reports

We provide first article inspection (FAI) reports for CNC parts and strictly control every stage of production, ensuring that every part you receive meets the same highest quality standards.

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Fast Quoting

Our engineering team can quickly prepare an efficient and practical solution based on your requirements within two hours of submitting your design files, providing you with a reasonable quote and saving you valuable time.

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CNC Prototyping Services & Production

With over 100 CNC machines, Rapid Model’s factory can quickly create prototypes based on your CAD drawings and efficiently ensure strict quality control during the production process.

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After-Sales Service

A dedicated account manager will oversee your project from start to finish, and we can provide photos and videos of the machining process so you can monitor production progress.If you encounter any quality issues with our products, please contact us promptly. We will unconditionally replace or refund your order and cover the shipping costs.

Client Testimonials

Don't just take our word for it. Here's what our valued clients have to say about our services.

"Rapid Model delivered exceptional precision parts for our aerospace project. Their attention to detail and ability to meet tight tolerances saved us weeks of development time."

Michael Johnson

Michael Johnson

Engineering Director, AeroTech Solutions

"The team at Rapid Model consistently exceeds our expectations. Their technical expertise and rapid turnaround have made them our go-to partner for complex medical device components."

Sarah Williams

Sarah Williams

Production Manager, MedInnovate Inc.

"We've worked with numerous CNC shops, but Rapid Model stands out for their reliability and quality. Their communication throughout the project was excellent, and parts arrived ahead of schedule."

David Chen

David Chen

CTO, AutoDrive Technologies

Frequently Asked Questions

Find answers to common questions about our CNC machining services.

What file formats do you accept for CNC machining?

We accept a wide range of CAD file formats including STEP, IGES, SolidWorks, Parasolid, and STL. For the best results, we recommend STEP files as they preserve the most geometric data.

What materials can you machine?

We machine over 50 different materials including various grades of aluminum, stainless steel, titanium, brass, copper, plastics (ABS, PEEK, Delrin), and engineering alloys. Contact us for specific material requirements.

What is your typical turnaround time?

Standard turnaround is 5-7 business days for most projects. We offer expedited services with 1-3 day turnaround for urgent projects. Actual time depends on part complexity, quantity, and current workload.

Do you provide finishing services?

Yes, we offer comprehensive finishing services including anodizing, powder coating, plating, polishing, bead blasting, heat treatment, and custom painting. We can handle all post-processing requirements in-house.

What quality control measures do you have?

We implement rigorous quality control at every stage. Our process includes First Article Inspection (FAI), in-process verification, and final inspection using CMM, optical comparators, and surface testers. We are ISO 9001:2015 certified.

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