Precision CNC Milling Services
Unmatched full-cycle protection for your milling projects. From initial concepts to finished precision parts, Zorapid’s quality system and engineering experts support your whole project. We turn your unique designs into high-performance components.
- ±0.0005 in (0.01 mm) tolerance for high-pressure reliability
- ISO 9001:2015 certified QC for consistent batch quality
- Fast lead times: Prototypes in 24 hours, production in 3–5 days
Reliable custom milling solutions tailored to your unique part requirements
Why Choose Zorapid?
Choose Zorapid CNC milling: precise, reliable, fast with expert support.
Advanced gear & strict quality deliver top-tier outcomes.
Ultra-Precise Milling Accuracy
Tight ±0.002 mm tolerance for consistent quality, even on complexgeometries.
Versatile Material Machining
Works with aluminum, steel, titanium, alloys, and engineering plastics.
Flexible Order Scale
No MOQ. From 1-piece prototypes to high-volume production.
Premium Surface Finish
Precision surfaces meeting both assembly and aesthetic needs.
Efficient Delivery Schedule
Fast turnaround to shorten your product development cycle.
Strict Quality Assurance
Full inspection ensures parts meet specs, delivered on time.
Full-Service CNC Milling | 3/4/5-Axis Custom Precision Parts
From simple 3-axis to complex 5-axis geometries, our CNC milling turns your designs into high-quality, functional parts. Backed by precision and craftsmanship, every cut meets strict performance and reliability standards.
3-Axis CNC Milling
A cost-effective solution for simple prototypes and basic geometries. Delivers precise dimensions and efficient production runs.
- Fast turnaround
- Consistent, reliable quality
- Budget-friendly pricing
4-Axis CNC Milling
Parts with sidewall features, elongated geometries slots. Reduces setup time improves surface quality compared to 3-axis milling.
- Higher machining precision
- Handles complex curved profiles
- Minimizes errors from repeated clamping
5-Axis CNC Milling
Complex geometries. Aerospace accuracy.
Impellers, rocket components.
Faster production. Quicker to market.
- Reduces production lead times
- Machining of intricate, complex shapes
- Suit high-end sophisticated components
Rapid & Scalable Manufacturing
Custom CNC Prototyping & Production Services
We deliver tailored CNC milling solutions for every stage: from prototypes and low-volume runs to high-precision custom parts. We adapt to your design and material needs.
Precision Milling Rapid Prototyping
Turn your CAD designs into high-precision parts in days. We deliver functional,dimensionally accurate prototypes for design verification and testing, acceleratingyour product iterations.
Precision Milling Batch Production
We scale your CNC parts with cost-effective solutions. Small batches (50 –5,000 units) meet 0.005mm tolerances, while large runs use custom tooling optimized for your design and material.
Custom CNC Machining Materials for Every Project
CNC Milling Materials: Selection of Precision Metals & Plastics
We offer a full range of certified metals and engineering plastics for CNC milling, delivering stable performance, tight tolerances, and excellent finishes for prototypes and production runs.
Metal
Premium metalsoffer lightweight strength, corrosion resistance, and thermal conductivity. Ideal for aerospace, automotive, medical, and automation applications.
Plastic
High-performance engineering plastics provide wear resistance, insulation, and chemical stability. Perfect for electronics, medical devices, and instrumentation parts.
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.
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
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.
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
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.
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
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.
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
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.
Subtypes:
Stainless Steel SUS201, SUS303, SUS 304, SUS316, SUS316L, SUS42, SUS430, SUS431, SUS440C, SUS630/17-4PH, AISI 304
Available Finish:
As machined, Electroplating, Passivation, Powder coating
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.
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
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.
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
ABC
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.
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
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.
Subtypes:
PC Black, PC Transparent, PC White, PC Yellowish White, PC+GF30 Black
Available Finish:
As machined, Sand blasting, Tumbling, Painting, Brushed Finish
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.
Subtypes:
PMMA Black, PMMA Transparent, PMMA White
Available Finish:
As machined, Sand blasting, Tumbling, Painting
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.
Subtypes:
Dark brown (coffee) POM 100AF, POM Black, POM Blue, POM White
Available Finish:
As machined, Sand blasting, Tumbling, Painting
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.
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
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.
Subtypes:
HDPE, UHMW-PE, LDPE
Available Finish:
As machined, Sand blasting, Tumbling, Painting, Powder coating
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.
Subtypes:
PEEK Beige(Natural), PEEK Black
Available Finish:
As machined, Sand blasting, Tumbling, Painting, Powder coating
Zorapid’s CNC Milling Tolerance Standards
Plastic parts：follow ISO 2768-M (medium tolerance), balancing cost-effectiveness with standard functional requirements.
Metal parts：Use ISO 2768-F (fine tolerance) for tight precision fits, ensuring reliable performance in demanding applications.
ISO 2768 Linear Dimension Tolerances (mm)
Values in millimeters
Typical Tolerance Ranges for CNC Milling Standard Grade:
±0.127 mm (±0.005 in) — our default precision level, ensuring consistent quality for everyday production. High Precision Grade: ±0.05 mm (±0.002 in) — premium offering for projects requiring tight dimensional accuracy.
For critical tight-tolerance parts down to ±0.025 mm, submit detailed 2D drawings. We provide DFM checks and tolerance optimization, with compliance to ISO 2768 standards. Note: Tolerances depend on material, process, and part geometry.
Tailored Surface Finishes for CNC Parts: Boost Corrosion Resistance & Aesthetic Appeal
Milling Surface Treatment Service
Consistent surface quality across prototyping and mass production, with uniform results guaranteed for global orders.
As-Machined Finish
Direct CNC surface with fine tool marks. A cost-effective choice for functional prototypes and non-critical parts.
Polishing
Mirror finish down to Ra 0.2 μm. Ideal for luxury goods, optics, and parts requiring a flawless aesthetic.
Anodizing
Premium aluminum finish boosting corrosion resistance and durability, with custom color options available.
Sand Blasting
Creates a uniform matte texture.
Improving coating adhesion and hiding surface imperfections.
Brushed Finish
Smooth satin texture that hides minor scratches. Ideal for visible parts in consumer electronics and luxury goods.
Nickel Electroplating
Even nickel layer enhancing conductivity, corrosion protection, and wear resistance for industrial parts.
Electropolishing
Mirror-smooth metal finish that boosts corrosion resistance, ideal for stainless steel and medical parts.
Black Oxide Coating
Thin magnetite layer on steel, improving corrosion resistance with no dimensional change during treatment.
Alodine
Conductive aluminum coating that improves corrosion resistance and paint adhesion.
Tumbling
Removes burrs and creates a smooth finish, with no dimensional distortion.
Powder Coating
Durable, eco-friendly polymer coating with vibrant colors and excellent UV/wear resistance.
Heat Treatment
Vacuum process to adjust metal hardness, strength, and toughness for high-stress applications.
Cut Costs, Speed Up Production
CNC Milling Design Guidelines
Our engineers provide instant DFM feedback to optimize your designs, reducing lead times and rework, and delivering production-ready CNC parts.
Text Marking & Engraving Solutions
Balance readability and longevity with our proven parameters:
- Milling: Min 0.5mm width, 0.1mm depth engraving
- Laser marking: Durable permanent markings
- Custom: Engraving or laser mark texts, logos, symbols
Constraints for CNC Milling
Follow guidelines for sturdy CNC threaded connections
- ≤5mm thread: depth up to 3× diameter
- ≤5mm thread: depth up to 3× diameter
- Supports metric, UNC, UNF & custom threads
Optimize CNC Undercut Design
Avoid machining delays and extra costs with smart undercut design:
- Define undercuts clearly in CAD for fast quoting.
- Use standard tools to save cost and time.
- Cut deep complex undercuts for steady precision
Internal Corners & Deep Cavity Machining
Sharp inner corners unmillable. Follow rules for quality & tool life
- Drill: Hole depth ≤12× diameter
- Mill: Cavity depth ≤10× tool diameter
- Avoid narrow deep cavities to stop tool deflection
Optimize CNC Design to Elevate Your Project
Your CNC design to boost precision, reduce waste and improve performance.
- Cost saving: Less redesign & tool issues slash production costs
- Fast delivery: 3–5 day lead time to accelerate your market entry.
- Stable quality: Certification ensures parts within ±0.02 mm tolerance.
Are you ready for the project?
Uncompromising Quality Assurance
Ensure micron-level precision via spectral inspection and 3D scanning. With a 99.3% first-pass yield and long-term partnerships with 40% of clients, we deliver consistent, reliable quality.
Advanced Inspection Technology
We utilize state-of-the-art machinery to ensure exceptional accuracy.
- CMM&3D Scanner: Micron-level precision per global standards
- XRF Tester: Material verification & RoHS compliance
- Optical Gear: Surface and tight tolerance inspection
- Auto Monitoring: Stable consistent quality output
End-to-End Full Process Quality Control
We implement full-process controls to maintain consistent quality.
- Pre-production: DFM assessment & material certification
- In-production: SPC and real-time inline inspection
- Post-production: Visual, functional and compliance tests
- Documentation: Complete FAI, PPAP and certification files
Trusted by Global Industries for Years
Backed by 20+ years of specialized manufacturing expertise, Zorapid delivers mission-critical solutions for aerospace, medical, and automotive sectors:
- Six Sigma quality control ensures zero defects & high precision
- Rapid Turnaround: 3-day prototyping, 7-day mass production
- Full traceability with complete certification & test records
Milling Machining Cases
FAQ
Types of CNC Milling Equipment Do We Offer?
3-Axis Machining
Budget-friendly for prototypes & standard parts. Fast material cut, stable output for simple 3D pieces.
4-Axis Machining
5-Axis Machining
Our premium pick for complex aerospace, medical and auto components. One-setup machining for intricate shapes with ultra-tight precision.
Tolerance Levels Do We Achieve with CNC Milling?
Our CNC milling tolerance system balances precision, compliance and cost:
Global Standards: We follow ISO 2768-m for metals, ISO 2768-c for plastics to meet international specs.
Standard Run: Default ±0.1 mm tolerance for stable, mass-ready parts.
High-End 5-Axis: Tight ±0.01 mm accuracy for strict aerospace, medical and industrial complex pieces.
Custom Critical Specs: Note strict tolerances on your drawings; we adjust tooling, checks and processes to hit exact targets without extra wasteful costs.
3-Axis vs 4-Axis vs 5-Axis: When to Use Which?
Choose the Right CNC Milling Axis for Your Project
3-Axis: Ideal for basic flat parts, low-cost and fast for regular orders.4-Axis: Less re-fixturing for curved, multi-face work, cutting time and errors.5-Axis: Top precision for complex high-value pieces; one-setup finish for detailed shapes & tight tolerances.
Core Advantage: Matching your axis type slashes lead times, lifts part quality and boosts overall project efficiency.
How Fast Can We Ship CNC Milled Parts?
Our production workflow is optimized for speed without compromising quality: Low-complexity 3-axis parts: Express delivery in 1 business day Standard CNC milling programs: Full turnaround within 5 business days Time-critical projects: Custom expedited manufacturing to align with your critical path
CNC Milling vs CNC Turning: Which Process Is Right for Your Part?
Sets Vertical and Horizontal CNC Milling Apart?
Vertical spindles shine for small precision parts. Great visibility for drilling, boring and complex contours, ideal for prototypes, molds and detailed mechanical components.
Horizontal CNC Milling
Horizontal spindles handle big, heavy workpieces with steady support and fast chip removal. Built for heavy material cuts and high-volume orders.
How To Pick
Go vertical for fine, precise details; choose horizontal for heavy machining and large batch production.
What Is CNC Milling Tool Offset?
Tool offset adjusts cutter length and diameter to align tools to your part’s coordinate system.It’s key for hitting ISO 2768 tolerance specs and precise dimensionsTight offset control delivers repeatable, consistent parts matching your exact prints—essential for aerospace, medical and precision automation equipment.
What Is CNC Milling?
CNC milling is subtractive manufacturing: programmed spinning cutters shave material from solid blanks. It makes precise, complex shapes with tight tolerances via 3/4/5-axis work for pockets, slots, holes and detailed contours. Zorapid uses this process for prototypes, small batches and finished parts for auto, aerospace and industrial hardware, reliably meeting tough engineering demands.
Materials Can Be CNC Milled?
Plastics
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