One-Stop Custom CNC Milling Services
CNC Milling is widely used throughout the electronics, energy, and defense industries for its ability to rapidly manufacture precise parts in production-grade materials. Typical milled parts include:
- Aluminum heat sinks and chassis
- Composite material tooling plates
- Injection mold cores and cavities
- Gearbox housings and covers
- Aircraft structural brackets
- Semiconductor wafer handlers
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Service
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3 Axis CNC MillingPerforms fundamental X/Y/Z linear machining for prismatic parts like plates and brackets, offering cost-effective solutions for 2.5D contours and through-holes with ±0.05mm repeatability. -
4 Axis CNC MillingAdds rotary movement (A-axis) to enable cylindrical feature machining (e.g., cam profiles, helical grooves) without repositioning, boosting productivity for rotational symmetric components. -
5 Axis CNC MillingAchieves complex organic shapes (turbine blades, impellers) via simultaneous X/Y/Z/A/B/C-axis control, minimizing setups while ensuring <0.01mm accuracy on aerospace/medical parts. -
CNC RoutingA computer-controlled cutting process that precisely shapes materials like wood, plastics, and non-ferrous metals into flat or 3D parts. It achieves ±0.1mm accuracy with high-speed spindles (up to 24,000 RPM) for smooth finishes.
Our Powerful CNC Milling Parts
Delivering high-efficiency milling solutions with ±0.005mm precision, we utilize advanced 3-5 axis CNC milling centers to process aluminum, steel, titanium, and engineering plastics. Our ISO 9001-certified processes guarantee complex geometries, tight tolerances, and superior surface finishes (Ra 0.8μm achievable). Experience milling excellence for aerospace, automotive, and medical applications.
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CNC Milling Aluminum Part
10+ Years of CNC Milling ServicesTolerances as tight as ±0.0002 in.（0.005mm）Wall thickness as thin as 0.020 in (0.5 mm)Lead times as fast as 2 working days -
CNC Milling Aluminum 5052 New Energy Part10+ Years of CNC Milling ServicesTolerances as tight as ±0.0002 in.（0.005mm）Wall thickness as thin as 0.020 in (0.5 mm)Lead times as fast as 2 working days -
CNC Milling Aluminum 6061 Medical Device Part10+ Years of CNC Milling ServicesTolerances as tight as ±0.0002 in.（0.005mm）Wall thickness as thin as 0.020 in (0.5 mm)Lead times as fast as 2 working days
CNC Milling Materials
CNC milling supports high-precision machining across metals, plastics, and composites, enabling rapid prototyping to large-scale production with dimensional tolerances as tight as ±0.005 mm4.
Check out some of the common materials for your CNC turning projects.
Check out some of the common materials for your CNC turning projects.
Metals
Lightweight, high thermal conductivity, Excellent Machinability, Superior Dimensional Stability, Tight-Tolerance Capable, Perfect for Complex CNC Milling and Turning.
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Lead Time: < 5 days
Tolerances: ±0.005″ (±0.125mm)
Max part size: 200 cm x 80 cm x 100 cm
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Tolerances: ±0.005″ (±0.125mm)
Max part size: 200 cm x 80 cm x 100 cm
Golden aesthetic, good machinability, moderate corrosion resistance, often used for decorative hardware.
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Superior wear resistance, seawater corrosion resistance, classic metallic luster, commonly cast.
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High thermal/electrical conductivity, antimicrobial surface, develops natural patina over time.
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High strength-to-weight ratio, magnetic properties, requires coating for rust prevention.
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Chromium-enhanced corrosion resistance, heat-resistant, maintains strength in extreme conditions.
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Extremely lightweight (67% aluminum density), good vibration damping, requires surface treatment.
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Aerospace-grade strength, biocompatible, seawater corrosion resistance, difficult to machine.
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Plastics
High impact resistance, rigidity, excellent machinability, moderate chemical resistance.
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Impact resistance (250x stronger than glass), transparency, heat resistance.
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Optical clarity (>92% light transmission), UV resistance, weather resistance.
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Low friction coefficient, excellent wear resistance, low moisture absorption, ideal for precision gears and bearings.
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High tensile strength, moisture-sensitive dimensional changes, self-lubricating, textile and mechanical parts.
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HDPE: Chemical resistance, rigidity; LDPE: Flexibility, food-safe; both used in pipelines and packaging.
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Aerospace-grade thermal stability (260°C+), radiation resistance, high-cost specialty implants and aerospace.
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Heat distortion resistance (150°C), electrical insulation, glass-fiber reinforced automotive connectors.
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Chemical resistance, fatigue resistance, lightweight food containers and medical disposable products.
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Ultra-low friction coefficient, non-stick surface, extreme temperature range (-200°C~260°C), seals and cookware.
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CNC Milling Tolerances and Standards
Worldsoaring offers a range of CNC machining tolerances to suit your unique design requirements, including GD&T callouts. According to your part’s geometry and chosen material, we can accommodate standard thread sizes, machine custom treads, and reach tolerances of up to ±0.005mm(±0.0002 in.).Our standard tolerances for CNC milled metals are ISO 2768-m and ISO 2768-c for plastics.
CNC Milling Surface Finishes
Looking for the right finish? Choose from 20+ options to meet both your functional and aesthetic needs.
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As MachinedDescription: Standard finish with surface roughness of 3.2 μm (126 μin), removes sharp edges and deburrs parts cleanly. Key Use: Functional parts requiring no post-processing (e.g., brackets, gears). Process Tolerance: Dimensional ±0.1 mm, Ra 3.2±0.5 μm Process Specifications: ISO 2768-m standard, burr height ≤0.05 mm
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AnodizingDescription: Electrochemical oxide layer for corrosion resistance and aesthetics. Process Compatibility: Post-machining surface treatment Key Use: Aerospace components, consumer electronics (e.g., phone frames). Process Tolerance: Coating thickness 10-25 μm±2 μm, color consistency ΔE≤1.5 Process Specifications: MIL-A-8625 or ISO 7599, sealing pH 5.5-6.5
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AlodineDescription: Chemical film for corrosion protection and paint adhesion. Process Compatibility: Post-cleaning chemical immersion Key Use: Aviation and automotive electrical housings. Process Tolerance: Film thickness 0.5-3 μm, visual uniformity Process Specifications: Immersion time 3-10 min, bath temp. 20-30℃
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Black OxideDescription: Thin magnetite layer for corrosion resistance and reduced glare. Process Compatibility: Post-machining chemical treatment Key Use: Tools, firearms, automotive fasteners. Process Tolerance: Coating thickness 0.5-1.5 μm, salt spray ≥24 hrs Process Specifications: Alkaline bath pH 13-14, process time 5-30 min
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BrushingDescription: Linear abrasive finish for decorative texture. Process Compatibility: Manual/CNC abrasive belts Key Use: Appliance panels, architectural trims. Process Tolerance: Texture depth 0.05-0.2 mm, angle deviation ≤5° Process Specifications: Abrasive belt grit 80-240, feed speed 10-30 m/min
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EtchingDescription: Chemical/mechanical removal for micro-texturing or marking. Process Compatibility: Laser/chemical masking Key Use: Circuit boards, decorative logos. Process Tolerance: Etch depth 0.01-0.5 mm±5%, alignment ±0.1 mm Process Specifications: Etchant concentration 10-30%, laser power 20-100 W
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Electroless PlatingDescription: Uniform metal coating (e.g., nickel) without electricity. Process Compatibility: Chemical bath deposition Key Use: Wear-resistant industrial valves, connectors. Process Tolerance: Coating thickness 5-50 μm±5%, porosity ≤5/cm² Process Specifications: Bath temp. 85-95℃, pH 4.5-5.5
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ElectroplatingDescription: Electrochemical metal coating (e.g., chrome, zinc) for durability. Process Compatibility: Post-machining electrodeposition Key Use: Automotive trim, jewelry. Process Tolerance: Coating thickness 5-25 μm±2 μm, adhesion ≥4B (ASTM B571) Process Specifications: Current density 1-10 A/dm², bath temp. 40-60℃
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ElectrophoreticDescription: Polymer coating via electric field for corrosion resistance. Process Compatibility: Post-cleaning immersion Key Use: Automotive frames, HVAC components. Process Tolerance: Coating thickness 15-30 μm±3 μm, edge coverage ≥80% Process Specifications: Voltage 50-300 V, cure 160-200℃×20 min
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GrindingDescription: Precision abrasive finish for tight tolerances. Process Compatibility: Surface/cylindrical grinding Key Use: Bearing races, hydraulic shafts. Process Tolerance: Dimensional ±0.005 mm, Ra 0.4-0.8 μm Process Specifications: Wheel grit 60-120, coolant flow 5-20 L/min
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Heat TreatmentDescription: Thermal process to alter material hardness/toughness. Process Compatibility: Post-machining quenching/tempering Key Use: Gears, cutting tools. Process Tolerance: Hardness HRC 45-60±2, distortion ≤0.1% Process Specifications: Quench temp. 800-1000℃, temper time 1-4 hrs
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KnurlingDescription: Diamond or linear pattern for improved grip. Process Compatibility: CNC lathe rolling Key Use: Handles, adjustment knobs. Process Tolerance: Pattern depth 0.2-0.5 mm, pitch ±0.05 mm Process Specifications: Roller pressure 200-500 N, feed 10-50 mm/min
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Laser EngravingDescription: Permanent marking via laser ablation. Process Compatibility: Post-processing laser systems Materials: Metals, plastics, wood Key Use: Serial numbers, branding on industrial parts.
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OvermoldingDescription: Molding soft material (TPU/silicone) over rigid inserts. Process Compatibility: Injection molding Materials: Plastics, metals (as inserts) Key Use: Ergonomic handles, waterproof seals. Process Tolerance: Overmold thickness 1-5 mm±0.2 mm, bond strength ≥5 MPa Process Specifications: Injection pressure >5 MPa, mold temp. 40-80℃
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PolishingDescription: Mirror-like finish via abrasive compounds. Process Compatibility: Manual/robotic buffing Key Use: Medical instruments, luxury fixtures. Process Tolerance: Ra 0.025-0.1 μm, gloss ≥90 GU Process Specifications: Wheel speed 1000-3000 rpm, compound grit 2000-5000
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PassivationDescription: Acid treatment to remove free iron and enhance corrosion resistance. Process Compatibility: Post-cleaning chemical immersion Key Use: Surgical tools, food processing equipment. Process Tolerance: Film thickness 0.001-0.01 μm, salt spray ≥96 hrs Process Specifications: Nitric acid 20-50%, process time 20-60 min
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Powder CoatingDescription: Electrostatic polymer powder cured into durable film. Process Compatibility: Post-cleaning spray and bake Key Use: Outdoor furniture, automotive wheels. Process Tolerance: Coating thickness 60-120 μm±10 μm, ΔE≤1.0 Process Specifications: Voltage 30-90 kV, cure 180-200℃×15 min
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PhosphatingDescription: Phosphate layer for lubrication and paint adhesion. Process Compatibility: Chemical immersion Key Use: Engine components, firearm parts. Process Tolerance: Coating weight 2-5 g/m², crystal size ≤5 μm Process Specifications: Bath pH 2-4, process temp. 40-70℃
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PaintingDescription: Liquid coating for color and protection. Process Compatibility: Spraying/dipping Materials: Metals, plastics Key Use: Consumer electronics, automotive body panels. Process Tolerance: Coating thickness 20-50 μm±5 μm, adhesion ≥3B (ASTM D3359) Process Specifications: Spray pressure 0.3-0.6 MPa, cure 80-120℃×30 min
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Sand blastingDescription: Abrasive jet finish for uniform matte texture. Process Compatibility: Post-machining blasting Materials: Metals, glass, stone Key Use: Architectural facades, engine blocks. Process Tolerance: Ra 1.6-6.3 μm, coverage ≥95% Process Specifications: Grit size 80-120, air pressure 0.4-0.7 MPa
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CNC Machining Project
CNC Machining Project
Upload a CAD file to receive instantly quotes, lead time, and DFM details for your CNC components. Specializing in CNC machining for metals and plastics, we provide adaptive production and shipping solutions to align with your product development needs.
What is CNC Milling?How Does CNC Milling Work?
CNC milling is a precision subtractive manufacturing process that uses rotating multi-point cutting tools to remove material from a stationary workpiece. Controlled by computer numerical control (CNC) systems, this method produces complex geometries, slots, holes, and contours with exceptional accuracy. Common CNC milling machines include 3-axis, 4-axis, and 5-axis systems, enabling multi-directional cutting for intricate aerospace, automotive, or medical components.
Design & Programming: A CAD model defines the part geometry, which is converted into G-code via CAM software.
Tool Selection: Suitable cutting tools (end mills, face mills, drills) are chosen based on material and design requirements.
Workpiece Setup: The raw material (metal, plastic, or composite) is securely clamped to the machine bed.
Automated Machining: The CNC machine moves the rotating tool across multiple axes to cut the workpiece, layer by layer, until the final shape is achieved.
Post-Processing: Secondary operations like sanding, anodizing, or heat treatment may enhance surface finish or durability.
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CNC MachiningWe specialize in manufacturing custom prototypes and end-use parts with precise and complex designs through CNC milling,CNC turning, and CNC precision machining. -
Sheet Metal FabricationWe expert in the flexible manufacture of sheet metal prototypes and precision parts through laser cutting, stamping, metal bending, metal welding, riveting, embossing, flanging and tapping, chamfering and other processes. -
Injection Molding ServicesWorldsoaring provides plastic injection molding, rapid and production tooling, overmolding, and insert molding service. No MOQ required, all while maintaining high-quality and precision molding products. -
More ServicesSLA, HP MJF, SLS, SLM technologies for functional prototyping and low-volume production. We manufacture 3d printed parts at competitive price. -
SolutionsSLA, HP MJF, SLS, SLM technologies for functional prototyping and low-volume production. We manufacture 3d printed parts at competitive price.
Success Stories of CNC Milling Projects
FAQs
What are the types of CNC milling operations?
CNC milling encompasses distinct operational methodologies, each engineered to deliver specific machining capabilities tailored to diverse industrial
applications. The primary classification system identifies 8 fundamental milling variants:
Gear Milling/Thread Milling/Plain Milling/Form Milling/Face Milling/Angular Milling/Profile Milling/Straddle Milling
What are the Key Design Considerations for CNC Milling Operations?
CNC milling delivers high-accuracy parts (±0.005mm) for industries like aerospace and automotive, but design choices directly impact manufacturability
and cost. Below are critical guidelines to ensure optimal results:
1. Geometry Optimization
Avoid sharp internal corners: Use radii ≥1mm to prevent tool stress and extend cutter life.
Limit depth-to-width ratios: Slots deeper than 4x tool diameter risk deflection (e.g., a 6mm end mill max depth: 24mm).
Strengthen thin features: Walls <1mm thick may warp; add ribs or draft angles for stability.
2. Tooling & Machining Efficiency
Standardize hole sizes: Metric/M5+ holes reduce non-standard tool requirements.
Minimize setups: Align features to 3-axis machining to avoid 5-axis costs.
Surface finish control: Specify Ra 3.2μm for non-critical faces to lower polishing needs.
3. Material-Specific Tips
Aluminum: Ideal for intricate designs (high machinability).
Stainless steel: Avoid unsupported spans to reduce vibration.
Plastics: Use climb milling to prevent melting.
What’s the difference between CNC milling and CNC turning?
CNC milling and CNC turning are core subtractive manufacturing technologies, but their applications diverge based on part geometry and production
efficiency.
CNC Milling employs rotating multi-axis tools to cut stationary workpieces, enabling intricate features like pockets, threads, and 3D contours (±0.025mm
tolerance). Dominates aerospace and medical sectors for complex components.
CNC Turning rotates the workpiece against fixed tools, optimizing high-speed production of cylindrical parts (e.g., bushings, couplings) with superior
surface finishes (Ra 0.8–3.2μm). Preferred for automotive and hydraulic systems.
Selection Criteria:
Milling: Multi-axis versatility for prismatic/complex parts.
Turning: Cost-efficiency for rotational symmetry (±0.005mm concentricity).
