Best Machining
Custom CNC Milling Services
- Creating parts with complex designs with advanced 5-axis CNC machines
- Prototypes in as fast as 3 days
- No minimum orders
- Full NDA compliance, secure data handling
- One-Stop Service
- ±0.001″ precision
Over 50 metals and plastics in stock
Chosen by Over 1,000 Great Companies Across Various Industries
From Fortune 500 corporations to innovative startups, leading companies trust our precision CNC milling services to deliver critical components that power their success. Our advanced CNC milling capabilities have earned the confidence of industry leaders across aerospace, automotive, medical, electronics, and manufacturing sectors. With ISO 9001 certification and proven expertise in complex CNC milling projects, we consistently exceed expectations for quality, precision, and reliability. Join thousands of satisfied customers who rely on our CNC milling excellence to bring their most demanding projects to life.
Our CNC Milling Capabilities
We offer a comprehensive range of CNC milling services to meet your specific project needs, from simple components to highly complex parts. Our state-of-the-art facility is equipped with advanced 3-axis, 4-axis, and 5-axis CNC milling centers.
The most cost-effective solution for simple geometries and flat surfaces. Perfect for prototypes and production parts with features on a single face.
- Cost-effective for simple parts
- Fast setup and machining
- Ideal for flat surfaces and simple features
Adds rotational capability for parts with features on multiple sides. Reduces setup time and consistently improves accuracy for complex geometries.
- Advanced multi-sided machining capability
- Reduced setup time
- Better surface finish
The ultimate solution for advanced complex geometries and intricate contours. Seamlessly machine parts from multiple angles in a single setup.
- Complex geometries in single setup
- Superior surface finish
- Highest precision and accuracy
Wide Range of CNC Milling Materials
We stock over 50 engineering-grade metals and plastics, suitable for a wide variety of applications and industries. Our material experts can help you select the perfect material for your project based on your specific performance and cost requirements.
Metal Alloys
Aluminum alloys 6061 and 7075 stand out as premier choices for precision CNC machining due to their exceptional lightweight properties combined with an excellent strength-to-weight ratio and superior machinability. These alloys offer outstanding corrosion resistance, making them indispensable for aerospace components where weight reduction is critical, automotive parts requiring durability and performance, consumer electronics demanding precise tolerances, and protective enclosures that must withstand environmental challenges while maintaining structural integrity.
Stainless steel grades 304, 316L, and 17-4 PH deliver uncompromising performance through their high strength characteristics, exceptional corrosion resistance, and superior heat resistance properties, ensuring long-lasting durability in demanding applications. These versatile alloys are the material of choice for critical medical devices requiring biocompatibility, food processing equipment where hygiene is paramount, and marine hardware that must withstand harsh saltwater environments while maintaining structural reliability and performance over extended periods.
Alloy steel and carbon steel varieties provide exceptional high strength, outstanding wear resistance, and remarkable toughness, making them the backbone of heavy-duty industrial applications. These robust materials are specifically engineered for manufacturing precision jigs and fixtures that require dimensional stability, industrial machinery components that must withstand continuous operation under load, and automotive components where strength and reliability are non-negotiable requirements for safety and performance.
Brass and copper materials offer unparalleled electrical conductivity combined with excellent corrosion resistance and superior machinability, making them essential for applications requiring both electrical performance and precision manufacturing. These materials are specifically chosen for electrical connectors where reliable conductivity is critical, plumbing fittings that must resist corrosion while maintaining leak-proof seals, and decorative hardware applications where both functional performance and aesthetic appeal are equally important.
Titanium represents the ultimate in advanced material engineering, delivering an exceptional strength-to-weight ratio, outstanding corrosion resistance, and unique biocompatible properties that make it irreplaceable in the most demanding applications. This premium material is specifically selected for aerospace components where every gram matters without compromising strength, medical implants requiring perfect biocompatibility with human tissue, and high-performance applications where conventional materials simply cannot meet the extreme requirements for strength, weight, and environmental resistance.
Plastic
ABS plastic delivers exceptional high impact strength combined with outstanding toughness and rigidity, making it an ideal choice for applications requiring durability and structural integrity. This versatile thermoplastic excels in rapid prototyping where design validation is critical, protective enclosures that must withstand mechanical stress and environmental conditions, and consumer products where both performance and cost-effectiveness are essential. The excellent balance of mechanical properties and processability makes ABS particularly valuable for manufacturers seeking reliable material performance in demanding applications while maintaining economic viability for both prototype development and volume production.
Nylon polyamide stands out as a premium engineering plastic offering high mechanical strength, exceptional wear resistance, and superior chemical resistance, making it indispensable for high-performance mechanical applications. This robust material is specifically engineered for precision gears that require consistent performance under load, bearings that must operate smoothly over extended periods, bushings that demand low friction and wear characteristics, and structural components where mechanical reliability is paramount. The unique combination of strength, durability, and chemical stability makes nylon the material of choice for applications where conventional plastics cannot meet the demanding requirements of continuous mechanical operation.
Polycarbonate plastic provides remarkable high impact strength and excellent toughness while maintaining optical transparency, creating unique opportunities for applications requiring both structural performance and visual clarity. This exceptional material is specifically selected for precision lenses where optical clarity and impact resistance are equally critical, safety guards that must provide protection while allowing visibility, and electronic housings that require both electromagnetic shielding and visual access to internal components. The rare combination of mechanical strength, optical properties, and dimensional stability makes polycarbonate invaluable for applications where traditional materials cannot simultaneously meet structural and optical requirements.
POM Delrin® delivers exceptional high stiffness, ultra-low friction characteristics, and outstanding dimensional stability, making it the premier choice for precision mechanical components requiring tight tolerances and smooth operation. This advanced engineering plastic is specifically designed for precision gears where accurate tooth profiles and consistent performance are essential, high-performance bearings that must operate with minimal friction and wear, precision rollers requiring smooth surface finish and dimensional accuracy, and critical mechanical assemblies where dimensional stability under varying environmental conditions is non-negotiable. The superior machinability and exceptional dimensional control make POM ideal for applications demanding the highest levels of precision and reliability.
PEEK represents the pinnacle of high-performance engineering plastics, offering exceptional high-temperature performance, outstanding chemical resistance, and superior mechanical strength that rivals many metals while maintaining the processing advantages of thermoplastics. This premium material is specifically engineered for demanding aerospace components where weight reduction and temperature resistance are critical, biocompatible medical implants requiring long-term stability in biological environments, and precision semiconductor equipment where chemical purity and dimensional stability at elevated temperatures are essential. The unique combination of thermal stability, chemical inertness, and mechanical performance makes PEEK the ultimate choice for applications where conventional materials simply cannot meet the extreme requirements of modern high-technology industries.
CNC Milling Surface Finishes
We offer an extensive range of advanced surface finishing options designed to enhance the appearance, optimize surface roughness, increase hardness, and improve chemical resistance of your precision CNC milled components. Our state-of-the-art finishing capabilities ensure your parts not only meet functional requirements but also exceed aesthetic and performance expectations across diverse industrial applications.
The standard finish with visible tool marks from CNC machining operations. Surface roughness typically ranges from 125-250 μin Ra. This cost-effective option maintains original material properties and dimensional accuracy while providing immediate availability upon machining completion. Perfect for prototypes, internal components, and applications where surface texture is not critical to functionality or aesthetics.
Creates uniform matte or satin surface finishes by removing machining marks through controlled abrasive media. Achieves 32-125 μin Ra surface roughness while providing complete coverage on complex geometries. This process improves fatigue resistance, enhances paint adhesion, and creates ideal surface preparation for subsequent coatings. Excellent for consumer electronics, automotive trim, and architectural hardware requiring uniform appearance.
Transforms aluminum surfaces into durable, corrosion-resistant ceramic coatings with extensive color options. Type II provides decorative finishes with excellent corrosion resistance, while Type III delivers hard-coat protection with superior wear resistance up to 700 HV hardness. Both types offer integral coating that cannot chip or peel, making them essential for aerospace, medical, automotive, and consumer electronics applications.
Electrostatic coating process delivering exceptional durability and unlimited color options. Creates 0.002″-0.008″ thick finish with superior impact, scratch, and chemical resistance. Environmentally friendly with zero VOCs and 99% transfer efficiency. Available in smooth, textured, metallic, and special effect finishes with temperature resistance up to 400°F. Perfect for outdoor equipment, architectural components, and consumer appliances requiring long-term durability.
Progressive abrasive process creating smooth, reflective surfaces from rough polish (32 μin Ra) to super mirror finish (<1 μin Ra). Removes surface imperfections while maintaining tight tolerances on complex geometries. Compatible with stainless steel, aluminum, brass, and exotic alloys. Essential for optical components, medical instruments, food processing equipment, and high-end consumer products where surface quality impacts performance or aesthetics.
Electroplating process applying metallic coatings for enhanced corrosion resistance and surface hardness. Options include nickel (wear resistance, magnetic shielding), chrome (up to 1000 HV hardness, low friction), zinc (sacrificial corrosion protection), and specialty platings like copper, tin, silver, and gold. Critical for automotive components, electronic connectors, hydraulic systems, and applications requiring enhanced surface properties beyond base materials.
Precision Tolerances for CNC Milled Parts
We are committed to delivering high-quality parts that meet your exact specifications. We offer a range of tolerance options to suit your needs.
| Feature Type | Standard Tolerance | Precision Tolerance |
|---|---|---|
| Linear dimensions | ±0.005″ | ±0.001″ |
| Hole diameters | ±0.003″ | ±0.0005″ |
| Angular dimensions | ±0.5° | ±0.1° |
| Surface roughness | 125 μin Ra | 32 μin Ra |
| Flatness/Parallelism | ±0.005″ | ±0.001″ |
Design for Manufacturability (DFM) Guidelines
Optimizing your design for manufacturability can significantly reduce costs, improve quality, and accelerate lead times. Our comprehensive DFM guidelines help you design parts that are both functional and cost-effective to manufacture using CNC milling processes.
Design Feature | Recommended | Acceptable | Avoid | Reason & Impact |
Internal Radii | R0.030″ – R0.060″ (0.76-1.52mm) | R0.010″ – R0.030″ (0.25-0.76mm) | Sharp corners R0.000″ | Larger radii allow robust cutting tools, reduce stress concentration, improve surface finish, and extend tool life |
Wall Thickness – Metals | ≥0.050″ (1.27mm) | 0.030″ – 0.050″ (0.76-1.27mm) | <0.030″ (0.76mm) | Prevents warping, vibration, and deflection during machining. Thicker walls improve dimensional stability |
Wall Thickness – Plastics | ≥0.080″ (2.03mm) | 0.060″ – 0.080″ (1.52-2.03mm) | <0.060″ (1.52mm) | Plastic materials require thicker walls due to lower stiffness and thermal expansion properties |
Hole Depth | ≤5x diameter | 5-10x diameter | >10x diameter | Deep holes require specialized tooling, slower feeds, and frequent tool withdrawal for chip evacuation |
Hole Diameter | ≥0.040″ (1.0mm) | 0.020″ – 0.040″ (0.5-1.0mm) | <0.020″ (0.5mm) | Small holes are prone to tool breakage and require micro-machining capabilities |
Feature Aspect Ratio | Width:Depth = 3:1 | Width:Depth = 2:1 | Width:Depth = 1:1 or less | Deep narrow features require long tools prone to deflection and vibration |
Pocket Depth | ≤4x width | 4-6x width | >6x width | Deep pockets limit tool access and require multiple setups or specialized long tools |
Thread Depth | 1.5x diameter | 1-2x diameter | >2x diameter | Deep threads require tap extensions and increase tap breakage risk |
Surface Finish | 125 μin Ra (3.2 μm) | 63-250 μin Ra (1.6-6.3 μm) | <32 μin Ra (0.8 μm) | Finer finishes require additional operations and significantly increase cost |
Tolerances | ±0.005″ (±0.13mm) | ±0.002″ – ±0.010″ (±0.05-0.25mm) | <±0.001″ (±0.025mm) | Tight tolerances require precision tooling, slower machining, and additional inspection |
Undercuts | Avoid if possible | Simple undercuts accessible with standard tools | Complex multi-axis undercuts | Undercuts require specialized tooling or multiple setups, increasing cost and complexity |
Text/Engraving | Raised text ≥0.020″ (0.5mm) high | Engraved text ≥0.010″ (0.25mm) deep | Text <0.010″ (0.25mm) | Small text requires fine tools and may be illegible after surface treatments |
Need Design Assistance for CNC Milled Parts?
Our experienced engineers can review your cnc milling parts design and provide recommendations to optimize cnc milling aluminum and plastic cnc milling manufacturability while reducing cnc metal mill production costs.
We Supply Precision CNC Milled Parts to Clients Across These Industries
Why could we provide precision parts for clients in these industries? It comes from our comprehensive manufacturing expertise and efficient management systems, that enable us to meet different industry needs. It includes Advanced Manufacturing Technology – Our modern CNC machines can process various materials (metals, plastics, composites) with micron-level accuracy, Flexible Production Capacity – We handle both small prototype batches and large-scale production runs efficiently, Strict Quality Assurance – Every part undergoes rigorous inspection using precision measuring instruments (CMMs, optical comparators, etc.)
Why Choose Us
50% to 100% lower than Europe and America
ISO9001:2015 certified and committed to continuous improvement
Your Parts Delivery in as fast as 3 days
From inquiries to issues, our team provides you 24/7 instant support
From metals to plastics, meets your every requirement for precision and quality
Plating, anodizing, heat treating, powder coating, and other finishing processes,tailored to your needs
Speed up your product development with quick, accurate prototypes
15 years serving European and American clients, tolerances down to +/- 0.001
Every part is carefully wrapped and secured, preventing any potential damage during transportation
How We Ensure Accurate, On-Time CNC Parts Delivery
To ensure your order is processed accurately and delivered on time, your part design is thoroughly reviewed before production begins. All specifications, including materials and surface finish, are carefully checked to prevent any issues. Throughout manufacturing, in-process inspections are performed to maintain consistent quality and precision. After production, a final inspection is conducted, and your parts are carefully packaged to ensure safe delivery. With this rigorous process, your parts are guaranteed to meet high-quality standards and be delivered on time, providing you with peace of mind.
Your part design will be reviewed by our engineering team, including 3D/2D drawings, material, surface finish, and structure. Any necessary adjustments or optimizations will be communicated promptly to address potential issues before production begins.
You will receive parts made from the highest quality raw materials, carefully selected to meet your exact specifications. Certification reports with material details, grades, and properties are available upon request, ensuring transparency and confidence in your order.
Your parts are manufactured using advanced CNC Turning, Milling, and Grinding equipment, ensuring precision and accuracy. With in-house machinery and high-precision testing tools, we guarantee top-quality results for even the most complex designs.
First article and in-process inspections are conducted to ensure your parts meet design and quality standards. Continuous monitoring during production ensures precision and compliance with your specifications, guaranteeing high-quality results.
Before shipment, all your parts are inspected for critical dimensions, tolerances and appearance. Then they are carefully packaged to prevent damage during transit, and inspection reports are provided upon request, ensuring your parts meet your standards.
Quality CNC Milled Parts You Can Trust
- First Article Inspection (FAI) for cnc milled parts.
- Material Certifications for cnc milling aluminum and plastic materials.
- Certificate of Conformance (CoC) for all cnc milling parts.
- Dimensional Inspection Reports for precision cnc milled parts
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Frequently Asked Questions
Get answers to common questions about our CNC milling services
CNC milling uses a rotating tool to cut a stationary workpiece, while CNC turning uses a stationary tool to cut a rotating workpiece. Milling is typically used for flat or complex parts, while turning is used for cylindrical parts.
We can achieve tolerances as tight as ±0.001″ (±0.025 mm) depending on the part geometry and material. Our standard tolerances are ±0.005″ for metal parts and ±0.010″ for plastic parts.
We accept most common 3D CAD file formats, including STEP, STP, SLDPRT, IGS, IGES, X_T, and SAT. For best results, we recommend STEP or STP formats.
Our standard lead time is 3-5 business days, but we offer expedited service with parts delivered in as fast as 1 day for urgent projects. Lead times depend on part complexity, material, and quantity.
Yes, we offer a wide range of surface finishes including as-milled, bead blasting, anodizing (Type II & III), powder coating, polishing, and various plating options to meet your specific requirements.
We stock over 50 engineering-grade materials including aluminum alloys (6061, 7075), stainless steel (304, 316L, 17-4 PH), titanium, brass, copper, and various engineering plastics like ABS, Nylon, PEEK, and Delrin.
Yes, we can provide material certifications, first article inspection (FAI), certificate of conformance (CoC), and dimensional inspection reports upon request.
We have no minimum order quantity. Whether you need a single prototype or thousands of production parts, we can accommodate your needs with competitive pricing.
Still have questions? Our engineering team is here to help.
What is CNC Milling? & How Does CNC Milling Work?
CNC (Computer Numerical Control) milling is a precision subtractive manufacturing process that uses rotating multi-point cutting tools to remove material from a workpiece and create a custom-designed part. This versatile process is suitable for a wide range of materials, including metals, plastics, and composites, and can produce complex geometries with high accuracy and repeatability. From rapid prototyping to full-scale production, CNC milling is a cornerstone of modern manufacturing.
The CNC milling process begins with a 3D CAD model, which is converted into a set of computer-readable instructions (G-code). This code directs the movement of the milling machine and the cutting tool. The workpiece is securely fixtured to the machine bed, and the high-speed rotating tool removes material according to the programmed path. Advanced multi-axis machines can move the workpiece and the tool along multiple axes simultaneously, enabling the creation of highly intricate features and geometries in a single setup.
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