Custom Online CNC Machining Services
Get instant quotes and fast-turn production for precision metal and plastic parts. Yicen delivers high-accuracy components through advanced 3-axis, 4-axis, and 5-axis CNC machining, achieving tolerances down to ±0.001 in (±0.025 mm) with consistent, repeatable quality across prototypes and production runs.
Yicenprecision Instant Quoting Engine is covered by U.S. Pat. Nos. 11,086,292, 11,347,201, 11,693,388, 11,698,623, 12,099,341, and 12,189,361. Other patents pending.
CNC Machining Capabilities for Complex Parts
With our developed manufacturing capacity, we will be able to produce high-precision metal and plastic parts, which produce the same level of consistency in the quality of prototypes, tooling, and full production. Having started with multi-axis milling, Yicen Precision has ensured reliability in the results even with most complex geometries, in terms of turning and development of the fixtures.
CNC milling is a subtractive machining technique which involves cutting metal and plastic material in the form of precise and repeatable shapes using 3-axis, 4-axis and 5-axis machines. Best suited to complicated geometries, strict tolerances, and high surface finishes on prototype and production components.
Live tooling in CNC turning provides high-quality cylindrical and threaded components that have smooth finishes and consistent dimensional accuracy. It guarantees to provide reliable tolerance control of the shafts, bushings and rotating elements that are under ISO 9001 2015 AS9100D ISO 13485 and ITAR compliant quality criteria.
Our design and manufacture precision jigs and fixtures which improves machining, assembly and inspection processes. Our fixtures are manufactured by high-precision CNC operations to be stable, repeatable and durable in small-batch and high-volume manufacturing settings.
Yicen CNC Machining Tolerances
With our precision cnc machining services, you get tight tolerances and exceptionally accurate components that meet the most demanding industry requirements. Yicen delivers consistent results across both plastic and metal cnc machining services, ensuring every part matches your specifications with complete reliability.
| Parameter | Specification |
| General Dimensional Tolerances | ±0.005” (±0.127 mm) for metals and ±0.010” (±0.254 mm) for plastics, following ISO 2768-mK. |
| Tight Tolerances | Precision down to ±0.001” (±0.025 mm) available upon request with detailed 2D drawings. |
| Minimum Feature Size | Approximately 0.020” (0.50 mm), depending on part geometry, tool diameter, and material. |
| Hole Diameter Tolerance | ±0.002” (±0.05 mm) typical; tighter tolerances achievable through boring or reaming. |
| Flatness / Parallelism | ≤ 0.002” per 6” (≤ 0.05 mm per 150 mm), depending on material and fixture setup. |
| Thread Tolerances | Standard metric and imperial threads per ISO/ASME; custom or fine threads available. |
| Angular Tolerance | ±0.5° typical for standard machining operations. |
| Surface Finish (Standard) | Ra 3.2 µm (125 µin) as-machined; improved via polishing, bead blasting, or anodizing. |
Gallery of CNC machined parts
Discover our expert precision cnc machining services, where accuracy meets performance at every stage. From intricate prototypes to production-ready components, our custom cnc machining services deliver high-accuracy parts. Every cut, every contour, crafted with exceptional quality, consistency, and attention to detail.
Materials for CNC Machining Service Parts
| Aluminium Alloy | Description | Finishing Options | Key Applications |
| 6061 | Versatile and commonly used for structural applications. | Anodizing, Powder Coating. | Construction, Aerospace. |
| 7075 | High strength, ideal for aerospace and military use. | Anodizing, Polishing. | Military, High-Strength Parts. |
| 2024 | Known for high strength and excellent fatigue resistance. | Anodizing, Painting. | Structural Components. |
| 5052 | Good corrosion resistance and excellent formability. | Painting, Polishing. | Marine, Sheet Metal Work. |
| 6063 | Excellent for architectural and decorative extrusion. | Anodizing, Powder Coating | Window Frames, Railings |
| 3003 | Highly workable and resistant to chemical corrosion. | Powder Coating, Polishing | Cooking Utensils, Tanks |
| Cast 356 | Optimized for complex casting with high pressure. | Bead Blasting, Polishing | Engine Blocks, Housings |
| Mic-6 | Precision cast plate with superior flatness. | Deburring, Coating | Machine Tables, Fixtures |
| Brass Type | Description | Finishing Options | Key Applications |
| C360 | The most common grade for high-speed machining. | Polishing, Lacquering | Plumbing, Fittings |
| C464 | Known as Naval Brass for seawater resistance. | Bead Blasting, Polishing | Marine Hardware |
| C260 | Highly ductile alloy used for shell casings. | Polishing, Coating | Automotive, Ammunition |
| C353 | Leaded brass ideal for intricate precision parts. | Deburring, Buffing | Watch Parts, Gears |
| C857 | Leaded yellow brass used for decorative casting. | Polishing, Plating | Hardware, Ornaments |
| C485 | Naval brass variant with improved machinability. | Bead Blasting, Coating | Fasteners, Valves |
| C687 | Aluminum-brass alloy for condenser tubing. | Polishing, Sanding | Heat Exchangers |
| C230 | Red brass with high corrosion resistance. | Polishing, Lacquering | Architecture, Pipes |
| Copper Type | Description | Finishing Options | Key Applications |
| C101 | Oxygen-free copper for maximum conductivity. | Polishing, Electroplating | Electrical Components. |
| C110 | Standard grade for high-grade electrical wiring. | Bead Blasting, Polishing | Power Connectors |
| C172 | Beryllium copper offering steel-like strength. | Coating, Polishing | Precision Springs. |
| C145 | Tellurium copper optimized for fast machining. | Deburring, Polishing | Welding Tips, Nozzles |
| C510 | Phosphor bronze with high fatigue resistance. | Sanding, Polishing | Bearings, Washers |
| C122 | Phosphorus-deoxidized copper for plumbing. | Polishing, Coating | Refrigerator Tubing |
| C182 | Chromium copper for high-temp conductivity. | Bead Blasting, Coating | Resistance Welding |
| C706 | Copper-nickel alloy resistant to marine growth. | Polishing, Sanding | Subsea Piping |
| Stainless Type | Description | Finishing Options | Key Applications |
| 304 | The standard grade for general food and chemical use. | Polishing, Passivation | Food Processing, Sinks |
| 316 | Marine grade with superior chloride resistance. | Electropolishing, Sanding | Medical, Marine Parts |
| 303 | Specifically designed for easy high-volume machining. | Bead Blasting, Polishing | Shafts, Nuts, Bolts |
| 17-4 PH | Hardened grade for high-strength requirements. | Coating, Polishing | Aerospace, Defense |
| 410 | Basic martensitic grade for wear resistance. | Hardening, Polishing | Surgical Tools, Valves |
| 430 | Ferritic grade with good formability and finish. | Buffing, Polishing | Kitchen Appliances |
| 2205 | Duplex steel for high-stress chemical zones. | Passivation, Deburring | Oil & Gas Equipment |
| 440C | High-carbon steel for maximum tool hardness. | Precision Grinding | Ball Bearings, Cutlery |
| Steel Alloy | Description | Finishing Options | Key Applications |
| 4140 | High-strength chromium-molybdenum steel. | Black Oxide, Hardening | Axles, Shafts, Gears |
| 1018 | Mild low-carbon steel for general fabrication. | Case Hardening, Sanding | Fixtures, Pins, Rods |
| 12L14 | Resulfurized steel for ultra-fast machining speed. | Zinc Plating, Polishing | Automatic Screw Parts |
| 8620 | Nickel-chromium-moly steel for case hardening. | Carburizing, Sanding | Heavy-duty Gears |
| 4340 | High-toughness alloy for critical stress parts. | Heat Treating, Coating | Aircraft Landing Gear |
| 1045 | Medium carbon steel for moderate strength. | Hardening, Polishing | Crankshafts, Bolts |
| 52100 | Chromium steel for high-wear resistance. | Precision Polishing | Bearings, Bushings |
| A36 | Common structural steel for general construction. | Painting, Sanding | Brackets, Plates |
| Titanium Type | Description | Finishing Options | Key Applications |
| Grade 5 | The primary alloy for high-stress aerospace. | Polishing, Blasting. | Turbine Blades, Frames. |
| Grade 2 | Pure titanium with excellent chemical stability. | Blasting, Passivation | Chemical Processing. |
| Grade 23 | Medical grade with high purity for implants. | Deburring, Polishing | Bone Screws, Medical. |
| Grade 9 | Mid-strength alloy for hydraulic systems. | Anodizing, Polishing | Tubing, Golf Clubs |
| Grade 1 | Most ductile grade for high formability. | Polishing, Sanding | Plate Heat Exchangers |
| Grade 7 | Palladium-enhanced for severe acid resistance. | Deburring, Blasting | Specialty Valves |
| Grade 12 | Superior weldability for industrial tanks. | Polishing, Coating | Nuclear Reactors |
| Beta-C | Highly formable alloy for specialized springs. | Anodizing, Buffing | Racing Car Springs |
| Plastic Material | Key Description | Finishing Options | Key Applications |
| ABS | Tough, impact-resistant, and easily machined. | Polishing, Painting, Sanding. | Prototypes, Enclosures. |
| Nylon (PA6) | High strength and excellent wear resistance. | As-machined, Sanding. | Gears, Bearings, Bushings. |
| Polycarbonate (PC) | High impact strength and optical clarity. | Transparent Polishing. | Safety Shields, Lenses. |
| POM (Delrin) | High stiffness and low friction properties. | As-machined, Deburring. | Precision Gears, Fasteners. |
| PEEK | High-performance plastic with heat resistance. | Polishing, Bead Blasting. | Aerospace, Medical Implants. |
| PTFE (Teflon) | Exceptional chemical and heat resistance. | As-machined, Sanding. | Gaskets, Chemical Seals. |
| Acrylic (PMMA) | Excellent transparency and weather resistance. | Mirror Polishing. | Display Cases, Signage. |
| PVC | Cost-effective and chemically stable. | Painting, Sanding. | Pipes, Chemical Tanks. |
| HDPE | High moisture resistance and impact strength. | As-machined, Deburring. | Food Processing, Containers. |
| UHMWPE | Extreme wear resistance and self-lubricating. | As-machined. | Conveyor Guides, Liners. |
| PET | High dimensional stability and strength. | Polishing, Sanding. | Food Packaging, Frames. |
| Ultem (PEI) | High dielectric strength and heat resistance. | Bead Blasting, Sanding. | Electrical Insulators. |
Surface Finishing of Precision CNC Machining
Surface finishing is an important part of precision CNC machining. It provides liveliness, resistance to corrosion, wear, and physical look with close dimensional capabilities. The most commonly used surface finishing options in precision components are as discussed below.
The first machining of CNC where the tool imprints can still be seen on the surface. This coating is applied to useful items that need accuracy and appearance is not critical.
Prior to proceeding to additional finishing processes, sharp edges and burrs which arise during machining are eliminated to enhance safety, accuracy and surface quality.
The section is also washed exhaustively to eliminate the oil, coolant, dust, and contaminants. When properly cleaned, adhesion and even finishing result is guaranteed.
The surface is ready as per the needed finish. This can be through light sanding, grinding or pre-treatment so that the results can be uniform.
Blasting, brushing or polishing of the bead is done to enhance the texture, smoothness or physical looks.
In order to increase corrosion resistance, wear resistance, and durability, protective or decorative treatments are used, such as anodizing, powder coating, passivation, or plating.
Manufactured components are checked on roughness on the surface, the thickness of the coating, color uniformity, and precision to check that they are within specification.
On inspection, protective steps may be taken using anti-corrosion oil, protective film, or temporary coating that ensures that the quality of the surface remains good during its storage or transportation.
Size Limits & Machine Constraints
Our machine envelopes support a wide range of part sizes across milling and turning operations. Complex geometries may require engineering review.
| Parameter | Limit/Specification | Description |
| Maximum Length (X) | 1200 mm | Machine bed ki horizontal travel capacity. |
| Maximum Width (Y) | 500 mm | Workpiece ki maximum chaurayi (width). |
| Maximum Height (Z) | 400 mm | Vertical clearance aur tool movement ki limit. |
| Standard Tolerance | ±0.125 mm | Aam taur par di jane wali standard accuracy. |
| Precision Tolerance | ±0.01 mm | Special cases mein achieve ki jane wali high accuracy. |
| Max Workpiece Weight | 200 – 500 kg | Machine table par rakhe jane wale part ka wazan. |
| Parameter | Limit/Specification | Description |
| Maximum Diameter | 300 mm | Lathe machine ke chuck mein fit hone wala max size. |
| Maximum Length | 500 mm | Part ki lambayi jo tailstock tak support ho sake. |
| Minimum Diameter | 1.0 mm | Bariki wale pins ya needles ka minimum size. |
| Bore Diameter | 50 mm | Spindle ke andar se guzarne wali rod ka max diameter. |
| Rotational Speed | 3000 – 5000 RPM | Material ke hisaab se spinning ki raftar. |
| Surface Roughness | Ra 0.8 – 3.2 μm | Turning se milne wali smoothness ka level. |
| Feature | Minimum Limit | Why it Matters? |
| Wall Thickness | 0.5 mm (Metal) | Isse patli wall machining ke waqt bend ho sakti hai. |
| Hole Diameter | 1.0 mm | Chhote drills tootne ka khatra zayada hota hai. |
| Internal Radius | 1.0 mm – 2.0 mm | Tool hamesha round hota hai, sharp corners nahi bana sakta. |
| Engraving Depth | 0.2 mm | Text ya logo ki minimum gehraayi jo nazar aaye. |
| Thread Depth | 3x Diameter | Bohat gehre threads mein tool phans kar toot sakta hai. |
| Slot Width | 1.5 mm | Cutting tool ki minimum chaurayi jo slot kaat sake. |
| Constraint | Standard | Description |
| Material Hardness | Up to 45-50 HRC | Zayada sakht material ke liye special tools chahiye. |
| Edge Treatment | Deburred / Broken | Tez kinaro (sharp edges) ko khatam karna. |
| Tap Size | M2 to M24 | Standard holes jin mein screw fit ho sakein. |
| Surface Finish | Ra 1.6 (Standard) | Standard finish jo bina extra cost ke milti hai. |
| Angle Tolerance | ±0.5° | Machined angles mein hone wali allowable deviation. |
| Setup Changes | 1 – 3 | Part ko kitni baar paltana padega (cost affects). |
CNC Machining Design Guidelines
By considering machining limitations during the design of your components, you enhance accuracy, minimize cost, and lead time is also enhanced. These rules assist in obtaining the best manufacturability and structural and functional integrity.
| Feature | Main Points |
| Internal Hads | • Avoid sharp internal corners; tools create natural radii
• Recommended internal radius: < Ø5-8 mm diameter
• Deep pockets: Tool length should exceed diameter for stability |
| Threads & Tapped Holes | • For threads Ø5-15 mm and > Ø15 mm: Depth < Ø8 mm
• Custom and fine-pitch threads available upon request
• Turned parts: Laser marking recommended for identification |
| Minimum Wall Thickness | • Metals: ≥ 0.8–1.0 mm
• Plastics: ≥ 1.2–1.5 mm
• Goal: Reduce warping, deflection, and machining waste |
| Hole Size & Depth | • Minimum hole diameter: Ø1.0 mm
• Min depth: Ø2.0 mm (depends on tool availability)
• Recommended depth: ≥ tool diameter to stabilize chip evacuation |
| Undercuts | • Supported: Square, flat faces, dovetails, and custom profiles
• Specialized tools may increase machining time or cost |
| Heat & Burnishing | • CNC Milling: Minimum Ø5 mm with Ø4 mm depth
• Turned parts: Fine finishing laser engraving is preferred |
| Around Over-Constraint | • Avoid parts requiring excessive secondary operations
• Avoid unsupported sharp corners and complex shapes |
| Design Objectives | • Enhance accuracy and minimize production costs
• Improve lead time and functional integrity
• Obtain best manufacturability and structural quality |
Quality Assurance & Inspection
Each CNC machined unit in Yicen Precision undergoes a verified inspection procedure complying with ISO 9001:2015, AS9100D and ISO 13485 standards.
Our metrology staff takes every part with prototype through to full production assurance to the defined GD&T and surface finish standards; traceable and acceptable.
Dimensional Accuracy
CMM, digital micrometers, and optical measurement system are used to check all the critical features with precision at the micron level.
GD&T & Tolerance Verification
Components pass ISO 2768-mK and ASME Y14.5 standards, providing batches with accurate form, position and profile.
Surface & Finish Testing
Surface roughness (Ra 3.2-0.8 mm) and coating thickness are checked to ensure the performance and the appearance.
Traceability & Reporting
Every order consists of material certificates (MTRs), FAI reports, and CMM data sheets to ensure full transparency of the processes.
Our Streamlined Ordering Process
Upload Your Design
Easily upload your CAD files through our secure online platform to get started.
Customize Your Requirements
Choose your material, finish, tolerances, and preferred lead time to match your project needs.
Get an Instant Quote
Receive a real-time quote based on your design and selected specifications, no delays.
Production & Delivery
Your parts are manufactured by trusted partners, quality-checked, and delivered to your door on time.
Industries We Serve
Yicen Precision is serving a broad spectrum of industries, covering aerospace, automotive, electronics, medical, and more. We specialize in providing high-quality, reliable parts tailored to meet the unique engineering challenges of each industry.
Applications of CNC Machining
Whether you’re creating a small batch of custom parts or scaling up for high-volume production, Yicen machining services offer the flexibility you need.CNC machining involves the manufacture of high precision, functional parts in a wide variety of industries. The most prevalent types of applications customers search and anticipate are given below.
Housings &
Enclosures
Electronics, robotics, sensor, industrial assemblies, and other electronics enclosures that demand strict dimensional control.
Mounting Components
Rigid brackets, supports, linkages and mounting frames applied in automotive, aerospace, and automation systems.
Shafts and Rotational Parts
Rigid brackets, supports, linkages and mounting frames applied in automotive, aerospace, and automation systems.
Thermal Components
Aluminum or copper heat management parts in fine geometries of fin and optimized surface areas.
Gears and Motion Mechanisms
Elements of the drive that have a high degree of alignment and smoothness of operation and engagement.
Mechanical Parts Prototypes.
Engineering validation and testing Prototypes that replicate the performance of production level.
Tooling Components
Locator blocks, base plates, inserts, soft jaws and production tooling used in machining and assembling environment.
Aerospace and Medical Components.
Components must contain rigid GD&T, material traceability, and high reliability performance.
Why Choose Yicen Precision to CNC Machining?
Yicen provides high-quality and tight-tolerance machining that is backed by elaborate equipment, engineering skills and approved quality control. All components are manufactured with precision, consistent lead times and dependable worldwide supply.
Unmatched Accuracy
Multi-axis machining to within +-0.001 in (+-0.025 mm) and consistent GD&T compliance on both metals and plastics.
DFAM Support ( by engineering)
Your CAD is evaluated by senior engineers, geometry is optimized, and better-performing and less expensive materials and toolpaths are suggested.
Quick TT and Mass Production
Machining centers with high capacity allow quick prototyping, low volume production, and any scale of production without delays.
80+ Certified Materials
Aluminum, steel, stainless, brass, copper, titanium, engineering plastics, high-temp polymers, and demand sourcing.
Qualified Quality Assurance.
CMM inspection, ISO compatible workflows, dimensional reports and aerospace, medical and industrial traceability
Consistent Customer Service
Transparency with projects, safety in file management, and uninterrupted global shipping with engineering support at all levels.
Transform Concepts into Precision Parts
We specialize in converting your ideas into high-quality, functional components with unparalleled speed and accuracy. With advanced technology and expert craftsmanship, we create parts that meet the most complex specifications.
- End-to-End Precision Engineering
- Streamlined Production Workflows
- Commitment to Machining Excellence
- Reliable, On-Time Delivery
Yicen Machining Solutions
CNC rapid prototype machining is perfect for creating engineering or production prototypes that closely resemble the final product in both appearance and functionality. At Yicen, we offer instant quotes and fast delivery, providing you with precise, high-quality CNC machined prototypes for your needs.
- Lead Time: 1-5 business days
- Capability: 1-100 pcs
- Get 20% off the price
Low volume CNC machining often acts as a bridge between prototyping and mass production for new and emerging production. With Yicen, this process becomes easier, more efficient, and cost-effective, allowing you to scale production quickly while maintaining high-quality standards.
- Lead Time: 5-15 business days
- Capability: 101-10,000 pcs
- Meet tight specifications
CNC production machining is the best solution for producing a thousand parts or more efficiently. Leveraging a diverse selection of materials and automation and multi-axis capabilities, Yicen delivers high-volume production with tight tolerances, superior dimensional accuracy, high reliability and fast turnaround times.
- Lead Time: 2-4 weeks
- Capability: Above 10,001 pcs
- Consistent Quality
Frequently asked questions
How can I get a quote or start a project?
What industries typically use your CNC machining services?
How is my data and design information kept secure?
Do you offer post-machining services like assembly or finishing?
What CNC machining processes do you offer?
Frequently Asked Questions
CNC Machining FAQs
How can I get a quote or start a project?
Simply upload your CAD files along with material, quantity, and finish details through our contact form. Our engineering team will review your design and send a detailed quotation – typically within 12 hours. You can also request a DFM consultation before production begins.
What industries typically use your CNC machining services?
We serve a wide range of industries including aerospace, automotive, robotics, medical devices, industrial machinery, consumer electronics, and automation systems. Each industry benefits from our experience in meeting specific tolerance, surface finish, and documentation requirements.
How is my data and design information kept secure?
All design files are handled under strict confidentiality. Secure file-transfer protocols and internal access control prevent unauthorized use or sharing. For sensitive projects, NDAs and ITAR compliance are available upon request.
Do you offer post-machining services like assembly or finishing?
Yes. Along with machining, we provide secondary operations such as part marking, thread inserts, deburring, light assembly, and surface finishing. This enables a complete end-to-end manufacturing solution under one roof, minimizing logistics and handling time.
What CNC machining processes do you offer?
We offer complete CNC machining solutions including 3-axis, 4-axis, and 5-axis milling, CNC turning with live tooling, and EDM / wire cutting for complex profiles. This allows us to produce high-accuracy components across metals and plastics, from simple blocks to multi-surface geometries with tight tolerances.
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