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Trusted by thousands of manufacturing companies worldwide
Your Global Partner for Quality CNC Machining Services in China
Precision CNC Machining Services From Prototype to Production in 7 Days.
Prototyping
Production
· Instant quoting with free design analysis
· 100+ combinations of materials & surface finishes
· Quality prototypes and end-use parts in as fast as 1 day
Our manufacturing capabilities
Milling, turning and post-processing
- Tolerances down to ±.020 mm (±.001 in)
- Lead times from 5 business days
FDM, SLA, SLS, MJF
- ± 0.3% with a lower limit of ± 0.3 mm (± 0.012 in)
- Lead times from 1 business day
Laser cutting, bending, post-processing
- Tolerances down to ±0.1 mm (±.004 in)
- Lead times from 5 business days
Prototypes and production tooling
- Wide range of part complexities and sizes
- 1 to 1M parts
Advanced On-Demand Manufacturing Solutions
100+ Materials Can Be Freely Selected
Aluminum
Versatile alloy with balanced strength, corrosion resistance, and machinability. Available grades: 6061, 7075, 5052, 2024-T8510.
CNC Tip:
Standard corner radii reduce tool wear. Avoid welding 7075 if possible.
Brass
Free-machining brass with high tensile strength, natural corrosion resistance, and good ductility. Available grades: C360, C260.
CNC Tip:
C360 is ideal for high-volume turning with good chip breaking; C260 requires effective chip breakers and high-pressure coolant.
Stainless Steel
Excellent corrosion resistance, formability and strength. Available grades: 304/L, 316/L, 17-4 PH.
CNC Tip:
Use sharp tools and constant feed rates to prevent work hardening. For 316/L, reduce cutting speed to manage heat buildup. Machine 17-4 PH in annealed state before heat treatment.
Steel
Good weldability, formability and strength. Available grades: Mild Steel 1018, Alloy Steel 4140.
CNC Tip:
Mild steel requires plating/coating immediately after machining to prevent rust. For alloy steel, use rigid tool setup to handle cutting forces.
Copper
Exceptional thermal and electrical conductivity. Available grades: C110, C101.
CNC Tip:
Use sharp, polished tools with high rake angles to prevent burrs. High-purity grades are more costly, use only when required.
Titanium
Ti-6Al-4V offers an outstanding strength-to-weight ratio and high corrosion resistance.
CNC Tip:
Requires low cutting speeds and high coolant flow to prevent heat buildup and fire risk.
Grey Iron
Features excellent damping capacity and machinability, though brittle under tension.
CNC Tip:
Machining produces graphite dust; efficient dust collection is essential.
Tool Steel
High wear resistance, toughness and edge retention. Available grades: A2, D2.
CNC Tip:
Leave grinding stock for tight tolerances after heat treatment. D2 is harder to grind than A2, use appropriate wheels to avoid cracking.
Bronze
Bearing bronze offering excellent anti-friction properties and load-carrying capacity.
CNC Tip:
Ideal for parts involving friction; do not over-polish bearing surfaces.
Magnesium
Extremely lightweight metal (lighter than aluminum) with good strength-to-weight ratio.
CNC Tip:
Chips are highly flammable; maintain strict fire safety and proper coolant use.
Only common materials are shown here. We offer many more specialty options. Contact us if you don’t see what you need.
CXB-Machining Surface Finishing Services
Finish Specs
Materials
Technical Description & Cost
As machined
Metals & Plastics
Raw finish directly from CNC. The most economical choice with tightest tolerances. Visible tool marks present.
Smooth machining
Metals & Plastics
Machined at lower feed rates. Less visible tool marks, better sealing properties and reduced friction.
Polishing
All Materials
Smoothing to remove tool marks. Essential for optical parts, molds, or reducing friction.
Bead Blasting
Plastics
Bombarded with glass beads for a uniform matte finish. Hides tool marks. Note: Affects dimensions.
Tumbled
Plastics
Batch process with vibrating media. Removes sharp edges (deburring) and smooths geometry.
Anodizing Type II (Matte)
Aluminum
Corrosion-resistant oxide layer. Matte finish achieved by bead blasting prior to anodizing. Non-conductive.
Anodizing Type II (Glossy)
Aluminum
Standard Type II anodizing applied to a polished/smooth surface. Vibrant, shiny appearance.
Anodizing Type III (Hardcoat)
Aluminum
Thick, dense oxide layer (25-50μm). Extreme wear resistance (60-70 HRC). Limited color options (Dark).
Powder Coated
All Metals
Dry powder fused by heat. Strong, thick plastic skin (~80μm). Superior durability to wet paint.
Black Oxide
Conversion coating. Anti-glare, mild corrosion resistance (needs oil). Negligible thickness change.
Chromate (Alodine)
Aluminum
Corrosion protection for aluminum that remains electrically conductive. Great paint primer. Cost-effective.
Plating
All Metals
Depositing metal (Nickel, Zinc, Chrome) for solderability, hardness, or corrosion resistance.
DLC Coating
Diamond-Like Carbon. Extremely hard, low-friction. Used in engines, tools, and luxury watches.
Specialist industries
Why Choose CXB ?
Experienced Professionals
High Precision Accuracy
Cost-Effective Solutions
Quality Assurance
Excellent Customer Service
Rapid Turnaround Time
Best Design Practices For CNC Machining
Avoid Deep Narrow Cavities
Avoid deep cavities with small diameters; they cause tool deflection, poor surface finish, excessive vibration, and longer machining time. Use stepped depths instead.
Keep Wall Thickness Consistent
Maintain consistent wall thickness; uneven walls lead to vibration, distortion, and poor dimensional accuracy during high-speed milling or turning operations.
Match Fillets to Cutter Radii
Design internal fillets that match standard cutter radii; mismatched corners require custom tools or multiple passes, increasing machining cost and cycle time.
Specify Practical Tolerances
Only specify tight tolerances where absolutely necessary. Over-dimensioning increases inspection time and manufacturing costs significantly.
Manufacturing Quality You Can Trust
Strict QC Workflow
Advanced Metrology
Full Traceability
Certified Partner
CXB CNC Machine Shop
Frequently Asked Questions
After you upload your CAD or drawing, senior machinists check key items like geometry, tolerances, wall thickness, tool access, radii, threads, and material behavior.
Our lead time is determined by part geometry, tolerance requirements, finishing needs, and order quantity. Most CNC-machined prototypes ship within 3–7 working days, while more complex components or multi-process assemblies may require additional time.
Yes. CXB offers a full range of documentation to support both standard and high-precision projects. Upon request, we provide material mill certificates, RoHS/REACH compliance, and traceability reports for all metals and engineering plastics we source.
CNC machining pricing is primarily driven by machining time, which depends on part geometry, tolerances, and material machinability. Additional factors such as fixture design, tool paths, surface finishing, and inspection requirements also influence the final cost.
At CXB, every part receives strict dimensional checks, material verification, and final QC approval. Critical features are inspected 100%, and reports can be provided for confirmation, minimizing the chance of nonconforming parts leaving our facility.
