Custom Online CNC Machining Services
Get instant online quotes for metal and plastic machined parts, from rapid prototyping to production. Based in China’s manufacturing hubs, we ship globally with lead times as fast 1 day.
20,000+ customers in over 120 countries & regions trust PartsMastery to manufacture their custom parts
CNC Machining Services for Custom Parts
PartsMastery delivers custom online CNC machining services from rapid machining to high-volume production, shipping globally from China’s owned CNC factories and manufacturing network. With 700+ CNC machines for milling, turning, routing, EDM, drilling, and precision grinding, we handle both simple and complex parts with lead times as fast as 1 day. Backed by ISO certifications, we ensure precision and consistency every time.
- Custom CNC Milling Services
With 200+ milling centers, including 3-axis, 4-axis and advanced 5-axis CNC mills, we can easily handle tight-tolerance parts and complex geometries in plastic and metal. Serving diverse industries and specializing in mold making.
- Custom CNC Turning Services
With our CNC lathes, turning centers, and mill-turn machines, we can create cylindrical-shaped workpieces, also for square or hexagonal-shaped raw materials. Turned prototypes and production parts delivered in just a few days.
CNC Machining for Prototyping to Production
Whether you require rapid machining, small-batch machining or high volume manufacturing, PartsMastery offers CNC machining solutions that scale with your project, maintaining quality, precision and fast turnaround times.
China’s CNC Machine Shops. Ship Globally
PartsMastery’s robust network of CNC facilities in China ensures 1-day lead times for CNC parts. Equipped with standard CNC machines, including grinders, wire cutters, and EDM machines, plus automated production lines. We provide precise manufacturing, smooth communication, and reliable global shipping for prototypes and production orders.
Precision CNC Machines
A Production Line of CNC Machines
A CNC Machine
CNC Machining Factory in Shenzhen
CNC Machining Factory in Dongguan
Injection Molding Materials
Aluminium
Aluminum is lightweight, strong, and easy to machine, positioning it great for various applications like aerospace and automotive parts. Its corrosion resistance also adds to its appeal in outdoor projects and structural components.
| Color: | |
| Subtypes: | Aluminum 6061, 6061-T6, Aluminum 2024, Aluminum 5052, Aluminum 5083, Aluminum 6063, Aluminum 6082, Aluminum 7075, 7075-T6, Aluminum ADC12 (A380) |
| Available Finish: | As machined, Anodizing, Powder coating, Electroplating, Painting, Sand blasting, Polishing |
| Price: | $$ |
| Lead Time: | ABout 5 business days |
Copper
Copper is highly conductive and malleable, making it a top choice for electrical wiring and plumbing. Its natural antibacterial properties also make it ideal for medical applications, while its aesthetic appeal suits decorative items and artwork.
| Color: | |
| Subtypes: | Copper C101(T2), Copper C103(T1), Copper C103(TU2), Copper C110(TU0), Beryllium Copper |
| Available Finish: | As machined, Polishing, Sand blasting, Tumbling, Electropolish, Alodine, Heat treatment, Black oxidize, Electroless nickel, Chrome plating, Brushed finish |
| Price: | $$$ |
| Lead Time: | About 5 business days |
Bronze
Bronze, an alloy of copper and tin, is known for its durability and resistance to corrosion. It’s widely used in marine applications, sculptures, and bearings, thanks to its strength and ability to withstand harsh environments.
| Color: | |
| Subtypes: | Tin Bronze |
| Available Finish: | As machined, Polishing, Sand blasting, Tumbling, Electropolish, Alodine, Heat treatment, Black oxidize, Electroless nickle, Chrome plating, Powder coating, Brushed finish |
| Price: | $$$ |
| Lead Time: | About 5 business days |
Steel
Steel is a strong and versatile material, widely used in construction and manufacturing. Its high tensile strength makes it suitable for structural components, while various Subtypes enhance its properties for specialized applications, like tools and machinery.
| Color: | |
| Subtypes: | Steel 1018, 1020, 1025, 1045, 1215, 4130, 4140, 4340, 5140, A36, Die steel, Alloy steel, Chisel tool steel, Spring steel, High speed steel, Cold rolled steel, Bearing steel, SPCC |
| Available Finish: | As machined, Electroplating, Passivation, Powder coating |
| Price: | $$$ |
| Lead Time: | About 7 business days |
Stainless Steel
Stainless steel is resistant to rust and staining, making it perfect for kitchen appliances and medical equipment. Its strength and aesthetic appeal also make it a popular choice for architectural designs and automotive parts.
| Color: | |
| Subtypes: | Stainless Steel SUS201, SUS303, SUS 304, SUS316, SUS316L, SUS42, SUS430, SUS431, SUS440C, SUS630/17-4PH, AISI 304 |
| Avaiblae Finish: | As machined, Electroplating, Passivation, Powder coating |
| Price: | $$$ |
| Lead Time: | About 7 business days |
Magnesium
Magnesium is lightweight yet strong, often used in aerospace and automotive applications where reducing weight is critical. Its machinability allows for complex shapes, and it’s also utilized in various electronic devices for its excellent conductivity.
| Color: | |
| Subtypes: | Magnesium Alloy AZ31B, AZ91D |
| Available Finish: | As machined, Polishing, Sand Blasting, Tumbling, Alodine, Heat treatment, Anodizing, Teflon coating, Electroless nickel, Painting, Powder coating, Electrophoresis |
| Price: | $$$$$ |
| Lead Time: | About 8 business days |
Titanium
Titanium is incredibly strong and lightweight, making it ideal for aerospace and medical implants. Its resistance to corrosion and biocompatibility enhance its use in demanding environments, while its high strength-to-weight ratio suits various industrial applications.
| Color: | |
| Subtypes: | Titanium Alloy TA1, Alloy TA2, Alloy TC4/Ti-6Al 4V |
| Available Finish: | As machined, Polishing, Sand Blasting, Tumbling, Electropolish, Alodine, Anodizing, Electroless nickel, Painting, Powder coating, Brushed finish |
| Price: | $$$$$ |
| Lead Time: | About 8 business days |
ABS
ABS is tough, heat-resistant, and impact-resistant. Lightweight and easy to work with, this material suits car parts and consumer goods where durability matters but cost is also important.
| Color: | |
| Subtypes: | ABS Beige(Natural), ABS Blac, ABS Black Antistati, ABS Milky Whit, ABS+PC Black, ABS+PC White |
| Available Finish: | As machined, Sand blasting, Tumbling, Teflon coating, Painting, Powder coating, Electrophoresis |
| Price: | $$ |
| Lead Time: | About 6 business days |
PC
Polycarbonate is super durable and clear, with amazing impact resistance. Commonly found in bulletproof glass and safety gear, it can take a hit without cracking.
| Color: | |
| Subtypes: | PC Black, PC Transparent, PC White, PC Yellowish White, PC+GF30 Black |
| Available Finish: | As machined, Sand blasting, Tumbling, Painting, Brushed Finish |
| Price: | $$ |
| Lead Time: | About 6 business days |
PMMA (Acrylic)
PMMA (acrylic) is clear, weather-resistant, and won’t fade. Ideal for outdoor displays, signage, and lighting, it holds up well in the elements.
| Color: | |
| Subtypes: | PMMA Black, PMMA Transparent, PMMA White |
| Available Finish: | As machined, Sand blasting, Tumbling, Painting |
| Price: | $ |
| Lead Time: | About 6 business days |
POM
POM is strong and has a low-friction surface, making it perfect for precision parts like gears and bearings where things need to fit just right and work smoothly.
| Color: | |
| Subtypes: | Dark brown (coffee) POM 100AF, POM Black, POM Blue, POM White |
| Available Finish: | As machined, Sand blasting, Tumbling, Painting |
| Price: | $$ |
| Lead Time: | About 6 business days |
PA (Nylon)
Nylon is versatile, tough, and resists wear. Often chosen for gears, bearings, and other parts that handle constant friction and heat without breaking down.
| Color: | |
| Subtypes: | PA(Nylon) Blue, PA6 (Nylon)+GF15 Black, PA6 (Nylon)+GF30 Black, PA66 (Nylon) Beige(Natural), PA66 (Nylon) Black |
| Available Finish: | As machined, Sand blasting, Tumbling, Teflon coating, Painting, Powder coating |
| Price: | $$ |
| Lead Time: | About 6 business days |
PE
Polyethylene is lightweight and tough, with great impact resistance. It’s a go-to material for packaging, containers, and anything that needs to resist cracking under pressure.
| Color: | |
| Subtypes: | HDPE, UHMW-PE, LDPE |
| Available Finish: | As machined, Sand blasting, Tumbling, Painting, Powder coating |
| Price: | $$ |
| Lead Time: | About 6 business days |
PEEK
PEEK is strong and can handle high temperatures without losing its strength. Found in high-performance industries like aerospace and medical implants, it’s built for extreme conditions.
| Color: | |
| Subtypes: | PEEK Beige(Natural), PEEK Black |
| Available Finish: | As machined, Sand blasting, Tumbling, Painting, Powder coating |
| Price: | $$$$$ |
| Lead Time: | About 8 business days |
PP
Polypropylene is tough, chemical-resistant, and handles higher temps. It’s commonly found in car parts, containers, and packaging, especially where exposure to heat or chemicals is common.
| Color: | |
| Subtypes: | PP Black, PP White, PP+GF30 Black |
| Available Finish: | As machined, Sand blasting, Tumbling, Painting, Powder coating |
| Price: | $ |
| Lead Time: | About 6 business days |
- As Machined
As machined finish leaves the surface straight from the CNC machine, providing a cost-effective option with tool marks.
- Anodizing
Anodizing increases corrosion resistance and wear properties, while allowing for color dyeing, ideal for aluminum parts.
- Polishing
Polishing achieves a high gloss finish, reducing surface roughness and enhancing the aesthetic appeal of metals.
- Sand Blasting
Sand blasting uses pressurized sand or other media to clean and texture the surface, creating a uniform, matte finish.
- Brushed Finish
A brushed finish creates a unidirectional satin texture, reducing the visibility of marks and scratches on the surface.
- Powder Coating
Powder coating applies a thick, wear-resistant layer with excellent color and texture options, suitable for a variety of surfaces.
- Electroplating
Electroplating bonds a thin metal layer onto parts, improving wear resistance, corrosion resistance, and surface conductivity.
- Black Oxidize
Black oxidize is a conversion coating for ferrous metals that improves corrosion resistance and minimizes light reflection.
- Electropolish
Electropolish is a chemical process that smooths and brightens surfaces while improving corrosion resistance.
- Alodine
Alodine coating provides corrosion protection and improves paint adhesion, mainly used on aluminum surfaces.
- Heat Treatment
Heat treatment alters the mechanical properties of metal to increase its hardness, strength, or ductility.
Customer Success Story
Consumer Goods
Neck Massager Project: From Concept to Mass Production
50%
Validation Time Reduction
50%
Validation Time Reduction
Consumer Goods
Neck Massager Project: From Concept to Mass Production
50%
Validation Time Reduction
50%
Validation Time Reduction
Consumer Goods
Neck Massager Project: From Concept to Mass Production
50%
Validation Time Reduction
50%
Validation Time Reduction
Specialist Industries
Tolerances for CNC Machining
With strict adherence to industry tolerances, our CNC machining services ensures consistent accuracy for all CNC machined parts, allowing each component to integrate perfectly.
| Description | |
|---|---|
| General Tolerances | Description Metals : ISO 2768-m Plastics : ISO 2768-c |
| Precision Tolerances | Description PartsMastery can manufacture and inspect parts with strict tolerances according to your drawing specifications and GD&T annotations, including tolerances tighter than +/- 0.001 inches. |
| Min Wall Thickness | Description 0.5mm |
| Min End Mill Size | Description 0.5mm |
| Min Drill Size | Description 1mm |
| Maximum Part Size | Description CNC Milling: 4000×1500×600 mm CNC Turning: 200×500 mm |
| Minimum Part Size | Description CNC Milling: 5×5 ×5 mm CNC Turning: 2×2 mm |
| Production Volume | Description Prototoyping: 1-100 pcs Low volume: 101-10,000 pcs High volume: Above 10,001 pcs |
| Lead Time | Description 5 bussiness days for most projects. Delivery of simple parts can be as fast as 1 day. |
Precision CNC Machining with Guaranteed Quality
Your success depends on reliable parts. Our CNC machining services provide precision machining with a 90% first-pass yield. You can get quality CNC machined parts for both prototypes and production runs.
Cerfications
Expertise
We have more than 30 quality engineers and over 20 advanced inspection tools such as CMMs, 2D measuring systems, and XRF analyzers. This ensures accurate dimensions and consistent performance in every project.
Transparent Process
Each stage, from raw material to final inspection, follows strict quality control procedures. Full traceability and documented checks give customers worldwide confidence in every delivery.
Design Guidelines for CNC Machining
Optimize your parts for cost-effective CNC manufacturing with our design guidelines. Our engineers provide design-for-manufacturability (DFM) feedback before production, helping you move smoothly from prototyping to production.
| Guideline | Description | Notes |
|---|---|---|
| Radii | Sharp internal corners will naturally form radii Drill depth ≤ 12× diameter Drill depth ≤ 12× diameter | Ensures smooth corner transitions for CNC parts. |
| Threads and Tapped Holes | Thread depth specifications Φ 1.5–5 mm 3× diameter Φ ≥ 5 mm 4–6× diameter | PartsMastery can produce threads of any specification. |
| Undercuts | Thread depth specifications: Square profilesFull radiusDovetail profiles | Customizable for specific part geometries. |
| Text | CNC Milling: Min width 0.5 mm Max width 0.1 mm CNC Turning: Uses laser marking technology | Standard text via CNC or laser engraving, customizable per requirements. |
Need Custom Specifications? Our engineering team can work with your specific requirements to achieve optimal manufacturability and part quality.
Why Choose Us
/01
High Quality Parts
Our ISO-certified CNC machining produces precise, reliable parts with strict inspection for fit and performance.
/02
Fast Lead Time
With local workshops and a network of CNC machine shops, we offer fast CNC machining capabilities and quick turnarounds, including lead time as fast as 1 day.
/03
Engineering Support
Rely on our team for all your CNC machining needs. Our specialists provide support to maximize design efficiency and quality.
CNC Machining FAQs
What are the applications of CNC machining?
CNC machining has a wide range of applications across industries.
- In the automotive and aerospace sectors, it is used to fabricate precise engine components, structural parts, and other intricate elements.
- The medical industry leverages CNC for manufacturing devices, implants, and surgical instruments.
- CNC is also crucial in electronics, enabling the production of electronic housings, circuit boards, and connectors.
- Machine tool makers rely on CNC to create complex molds, dies, and machine components. Additionally,
- CNC is valuable for general custom part production, prototyping, woodworking, and more, allowing for consistent quality and high precision.
What are the advantages and disadvantages of CNC machining?
Advantages of CNC Machining
- Precision and Repeatability: CNC machining ensures high precision and consistent replication of parts, crucial for complex designs with tight tolerances.
- Reduced Human Error: The automated nature of CNC machining minimizes human error, enhancing the overall quality of production.
- Efficiency and Speed: Automation allows for faster production cycles, enabling quicker turnaround times than manual processes.
- Material Flexibility: CNC machines can work with a diverse range of materials, including metals, plastics, and composites, offering versatility across various applications.
- Software Integration: Advanced CNC software supports quick design changes and updates, facilitating rapid prototyping and easy customization.
- Cost-Effective for Large Runs: While setup costs are higher, per-unit costs decrease significantly with larger production volumes, making it cost-effective for mass production.
Disadvantages of CNC Machining
- High Initial Costs: CNC machinery and its maintenance represent significant investments, making initial setup expensive, especially for small-scale operations.
- Skill Requirements: Operating CNC machines requires highly skilled personnel, which can increase training costs and limit accessibility.
- Less Cost-Effective for Small Runs: Due to setup and programming time, CNC machining may not be economical for producing small quantities of parts.
- Material Waste: CNC machining often involves subtractive processes, leading to more material waste compared to additive manufacturing.
- Limited to Material Hardness: Extremely hard materials can wear out CNC tools quickly, potentially increasing operational costs and downtime.
What's the difference between 3D printing and CNC machining?
Manufacturing Process: 3D printing is an additive process, building parts layer by layer from materials like plastic or metal. In contrast, CNC machining is subtractive, cutting away material from a solid block to shape the final product.
Material Efficiency: 3D printing minimizes waste by using only the material needed to form the part, whereas CNC machining can produce more waste due to its subtractive nature.
Speed and Cost: For small batches and complex geometries, 3D printing can be faster and more cost-effective. CNC machining is preferable for larger volumes and materials requiring high precision and strength.
Surface Finish and Tolerances: CNC machining typically achieves better surface finishes and tighter tolerances compared to 3D printing.
Who is the father of CNC machining?
John T. Parsons is often credited as the father of CNC machining. In the late 1940s, Parsons developed the first numerical control techniques and applied them to the production of helicopter rotor blades. Working alongside engineer Frank L. Stulen, Parsons conceptualized the method of using punched tape to guide machine tools. This innovation laid the groundwork for the development of CNC (Computer Numerical Control) technology. Their pioneering work eventually led to the creation of the first CNC machines in the 1950s, which revolutionized manufacturing by improving the precision, efficiency, and repeatability of machining processes.
What is the G and M code in CNC machines?
G and M codes are the programming languages used in CNC machining to control CNC machine tools. G-codes are primarily used for specifying the movements of the machine, such as linear interpolation, circular movements, and other specific functions related to the actual path of the tool. M-codes, on the other hand, handle machine functions that are not directly related to the path of the tool, such as turning the machine on or off, starting or stopping the spindle, and controlling coolant. Together, G and M codes provide a comprehensive set of instructions that CNC machines follow to produce parts accurately and efficiently.
What tolerances could CNC machining reach?
CNC machining is renowned for its ability to achieve high precision and tight tolerances, essential for complex and detailed parts. Typically, standard CNC machining can maintain tolerances within ±0.01 inches (±0.127 mm). PartsMastery defaults to standardized tolerances without special requirements. For even more precise requirements, advanced CNC machines can achieve tolerances as tight as ±0.0005 inches (±0.0127 mm) under optimal conditions. The achievable tolerance depends on several factors including the material, part geometry, size, and the specific type of CNC machine used. This capability makes CNC machining a preferred choice for industries that require highly accurate components, such as aerospace, medical, and automotive sectors.
What is machining center and how does it work?
A machining center is a highly advanced CNC machine designed to handle a variety of machining tasks including milling, drilling, and tapping, all within a single setup. This integration enhances efficiency and accuracy by reducing the need to transfer parts between different machines. Machining centers are equipped with a tool turret or magazine that holds multiple tool options, enabling automatic tool changing under CNC control. This capability allows for rapid switching between operations, optimizing production flow. Typically, machining centers are used for complex parts that require precision machining from multiple angles, making them indispensable in modern manufacturing environments.
Can you provide insight into your CNC machining capacity?
Certainly! At PartsMastery, we have the capacity to manufacture over 10,000 diverse prototypes each month, ranging from straightforward to complex designs. Our production capabilities are supported by more than 200 state-of-the-art CNC machines. We also take pride in our team of over 100 skilled technical experts who ensure precision and quality in every project. This extensive infrastructure allows us to meet large-scale demands efficiently, making us a reliable partner for all your CNC machining needs. Whether your project is big or small, our resources are geared to deliver with excellence.
How much does your CNC machining service cost?
At PartsMastery, every product goes through strict verification—from trial production and inspection testing to customer confirmation—before shipment. Our quality assurance process ensures that all parts meet the agreed specifications before delivery, minimizing the risk of nonconformities. We take pride in our precision and reliability, and every shipment is the result of a joint confirmation between our engineers and customers.
Is there a minimum order quantity (MOQ) for CNC machining at PartsMastery ?
At PartsMastery, we understand the diverse needs of our customers, ranging from single prototypes to large-scale production runs. Consequently, we do not enforce a strict minimum order quantity (MOQ). Whether you require just one machined part or thousands, we are equipped and ready to provide tailored solutions that meet your specific requirements. Our flexible approach ensures that all clients, regardless of order size, receive the highest level of service and quality.