Precision Machining Services

High-quality CNC parts with ±0.01mm tolerances, lead times from 1 day. Our CNC milling, turning, and multi-axis machining ensure precision for prototypes and production.

Instant Quote & DFM Analysis: Fast quote and manufacturability feedback. Supports ISO 2768 standards.
Full-Scale Machining: Complex parts in metals and plastics, up to 800mm.
Engineering & Quality Assurance: Material selection, finishing, and inspection reports (CMM available).
Fast Lead Times & Competitive Pricing: 1-day prototypes to batch production, optimized for speed and cost.

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Trusted by Engineers and Purchasing Leaders at the World's Most Successful Companies

15+Years Experience

300,000+Precision Parts Delivered

1000+Customer Service

99.2%On-Time Delivery

ISO9001:2015 Certification

Trusted bynumerous companies

JS Precision has produced over 300,000 unique parts for more than 1,000 clients worldwide, helping bring their custom projects from concept to reality.

What isPrecision CNC Machining

Precision machining is a subtractive manufacturing process that can produce parts with extremely tight tolerances (e.g., ±0.005 mm) and complex geometries. It is widely used in industries with very high precision requirements, such as aerospace, medical devices, and automotive.

Core Capabilities & Processes
We offer precision CNC machining services including CNC milling, CNC turning, and multi-axis machining, capable of handling metals and plastics with high repeatability and quality verified via CMM inspection.
Applications & Advantages
We provide high-accuracy components for critical applications such as aerospace parts, medical implants, and automotive systems, ensuring exceptional tolerance control and consistent quality for prototypes and mass production.

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Our CNC Precision MachiningServices

Wire EDM Service

JS Precision's Wire EDM service is a core component of our high-end CNC machining solutions. Specializing in micron-level cutting of complex geometries with minimal burrs, it is suitable for difficult-to-machine materials such as stainless steel, titanium alloys, and hardened steel, making it the preferred choice for industries such as aerospace, medical devices, automotive, and precision electronics.

Capability	Details/Specifications
Material Compatibility	Stainless steel, titanium alloy, aluminum, hardened steel, brass, copper, tungsten carbide.
Tolerance	±0.0008 inches (0.020 mm) standard, precision machining to ±0.0002 inches (0.005 mm).
Maximum Workpiece Size	Length: 18 inches (450 mm) Width: 14 inches (350 mm) Height: 10 inches (250 mm)
Surface Finish	Fine to Ra 0.18 μm, optional mirror effect.
Maximum Cutting Thickness	Up to 14 inches (350 mm) — depending on the specific material.
Wire Diameter Range	0.003 inches (0.08 mm) to 0.013 inches (0.33 mm).

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Mirror EDM Service

Mirror EDM delivers high-precision, mirror-finish components through advanced non-contact machining. It produces intricate geometries in hardened metals and superalloys beyond conventional tooling limits, serving critical aerospace, medical, and semiconductor applications with exceptional surface integrity and repeatable tight tolerances.

Capability	Details/Specifications
Material Compatibility	Stainless Steel, Titanium, Inconel, Tool Steel, Aluminum, Copper, Carbide.
Surface Finish	Achievable down to Ra 0.025 μm (Mirror Grade).
Tolerance	± 0.00004 inches (0.0010 mm) or better.
Maximum Workpiece Size	Length: 18 inches (457 mm) Width: 14 inches (356 mm) Height: 10 inches (254 mm)
Maximum Cutting Thickness	Up to 12 inches (305 mm) – varies based on material.
Electrode Material	Graphite & Copper, with in-house design and fabrication.
Typical Applications	Optical molds, medical implants, aerospace fuel nozzles, microfluidic chips.

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Grinding Service

JS Precision provides precision grinding of hardened materials; achieving sub-micron tolerances and ultra-smooth surfaces for aerospace, medical, and tooling applications. Our engineering ensures optimized processes and guaranteed component integrity.

Capability	Details/Specifications
Material Compatibility	Tool Steel, Stainless Steel, Aluminum, Carbides, Engineering Ceramics (Al₂O₃, Si₃N₄), Superalloys.
Grinding Methods	Surface Grinding, Cylindrical Grinding, Centerless Grinding, Internal Grinding, Profile Grinding.
Tolerance	± 0.00008 inches (0.0020 mm) or finer (material-specific).
Maximum Workpiece Size	Length: 28 inches (700 mm), Width: 12 inches (300 mm), Diameter: 10 inches (250 mm) for cylindrical.
Surface Finish	Achievable down to Ra 0.08 μm or better (material-dependent).

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CNC Turning Service

JS Precision provides high-precision CNC turning for complex parts, delivering tight tolerances and superior surface finishes from prototypes to high-volume production. Our optimized processes ensure fast lead times for critical aerospace, automotive, and medical applications.

Capability	Details/Specifications
Material Compatibility	Aluminum, Stainless Steel, Titanium, Inconel, Brass, Copper, Plastics (PEEK, Delrin).
Turning Operations	External & Internal Turning, Facing, Taper Turning, Boring, Drilling, Threading, Grooving.
Tolerance	± 0.0004 inches (0.0102 mm) or better (material and operation specific).
Maximum Workpiece Diameter	22 inches (559 mm) or specific to machine configuration.
Maximum Workpiece Length	65 inches (1651 mm) or specific to machine configuration.
Axis Configuration	2-axis, 3-axis, and multi-axis live tooling turning centers.
Bar Feeding Diameter	Up to 3.5 inches (89 mm) or machine-specific.

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CNC Milling Service

JS Precision delivers high-accuracy multi-axis CNC milling for complex components, achieving tight tolerances and superior finishes. Our service efficiently produces prototypes and end-use parts from metals to engineering plastics, supporting fast lead times for demanding industries.

Capability	Details/Specifications
Material Compatibility	Stainless Steel, Aluminum, Tool Steel, Titanium, Inconel, Copper, Brass, Engineering Plastics.
Milling Operations	Face Milling, Contour Milling, Pocket Milling, 3D Surface Milling, Drilling, Tapping, Boring, Thread Milling.
Tolerance	± 0.0004 inches (0.0102 mm) or better (operation and material dependent).
Maximum Workpiece Size	X: 44 inches (1118 mm) Y: 22 inches (559 mm) Z: 28 inches (711 mm) (machine-specific)
Axis Configuration	3-axis, 4-axis, and 5-axis simultaneous milling capabilities
Automation Compatibility	Integrated pallet systems and robotic loading for uninterrupted production.

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JS PrecisionPrecision Machining Solutions

PROTOTYPING

Rapid & High-Precision CNC Prototyping

Leverage our advanced multi-axis CNC machining and stringent quality control to accelerate your product development. We deliver functional prototypes with exceptional accuracy, helping you move swiftly from design validation to pre-production.

Capability: 20–800 units
Lead Time: 7 business days

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PRODUCTION

Low to High-Volume Precision Machining

JS Precision offers flexible production scaling from small batches to large-scale runs. Our automated CNC systems and integrated quality assurance ensure consistent, high-tolerance parts for automotive, aerospace, medical, and industrial applications—without compromising on speed or precision.

Capacity: 200–2,000+ units
Lead Time: 8–12 business days

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Precision Machining Parts Display

Precision Machining Tolerances

JS Precision delivers tight tolerances across EDM, grinding, CNC milling, and CNC turning. The table below summarizes typical and best-possible tolerances by process, with key notes for each.

	Typical Tolerance (mm)	Best Possible Tolerance (mm)	Key Notes
EDM (Electrical Discharge Machining)	±0.015	±0.003	Tolerance is primarily influenced by electrode design and wear control.
Grinding	±0.003	±0.001	Achieves exceptional surface finish in addition to tight tolerances.
CNC Milling	±0.020	±0.010	Precision depends on multi-axis capability, tool selection, and material properties.
CNC Turning	±0.020	±0.006	Final tolerances are closely related to the finishing processes applied.

Materials & Surface Finishes

Materials

We provide engineered materials including aerospace aluminum, stainless steel, titanium, and high-performance plastics.

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Surface Finishes

We offer superior finishes for enhanced durability, corrosion resistance, and aesthetics, from anodizing to specialized coatings.

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JS Precision Machine Shop

Check out our advanced fleet of high-performance precision machining centers, equipped to handle everything from complex multi-axis operations to high-volume production runs. With a dedicated collection of modern CNC equipment, we possess the technical capacity and engineering expertise to deliver components with uncompromising accuracy and efficiency. These capabilities allow us to meet stringent requirements across the aerospace, medical, automotive, and industrial technology sectors. Trust our proven services to deliver results that align precisely with your specifications.

Contact us for a detailed project review or to learn more about our high-tolerance CNC machining services. We provide custom manufacturing solutions for durable, dimensionally critical parts in various materials and geometries to meet your project needs.

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Customer Success Story

JS Precision partners with innovators across aerospace, medical, robotics, and advanced industrial sectors. From pioneering startups to established global manufacturers, we deliver precision manufacturing solutions built on reliability and technical excellence.

Aerospace & Medical

JS Precision x Advanced Component Manufacturer: A Mission-Critical Assembly

This case demonstrates how precision manufacturing with specialized EDM technology enables complex, mission-critical applications. For a dual-purpose aerospace-medical component requiring intricate internal channels, our advanced EDM process achieved flawless, stress-free features in a high-strength alloy, surpassing stringent performance and biocompatibility standards.

30%

Faster Lead Time

±0.025 mm

Critical Tolerance

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Automotive

JS Precision × Advanced Performance Systems: Precision Ground Turbine Components

JS Precision enables breakthrough performance through advanced precision manufacturing. We collaborated to produce critical turbocharger turbine housings, utilizing high-tolerance CNC grinding technology to achieve exceptional dimensional stability and surface finish in high-temperature alloys. Our engineering and full-process manufacturing support components built to endure extreme conditions and deliver reliable power.

±0.01 mm

Critical Grinding Tolerance

Ra 0.2μm

Surface Finish

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Robotic Automation

James Miller Collaborates with JS Precision to Develop Next-Gen Robotic End Effectors

James, a lead automation engineer from Canada, leveraged JS Precision's high-precision CNC milling to fabricate a series of complex robotic gripper housings and actuator interfaces. These critical components enable precise force feedback and reliable handling in high-cycle industrial assembly lines.

4-Axis

CNC Milling

7 Days

Delivery

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Consumer Electronics

Wearable Health Monitor Project: Miniature Sensor Housing

This project showcases the application of high-precision CNC turning in creating a complex, miniaturized aluminum housing for a next-generation health monitoring device. The component required ultra-tight tolerances and a flawless surface finish for both aesthetic integration and reliable sensor performance.

40%

Prototype Iteration Acceleration

±0.008 mm

Turning Tolerance Achieved

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Precision Machining with Guaranteed Quality

Your innovation deserves components built to exacting standards. Our precision machining services deliver exceptional accuracy and reliability, supporting your projects from initial prototype through to full-scale production.

Certifications

Our machining operations are certified to ISO 9001, ISO 13485, and IATF 16949 standards, ensuring rigorous quality management and compliance with international requirements for medical, automotive, and aerospace applications.

Expertise

A dedicated team of quality engineers and advanced metrology equipment—including CMMs, optical comparators, and surface analyzers—guarantees dimensional precision and consistent performance for every precision-machined part.

Transparent Process

We maintain full traceability and documented quality checks at every stage, from raw material certification to final inspection. This commitment to a controlled, transparent process provides our global customers with complete confidence in every delivery.

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Why Choose JS Precision

/01

Certified Precision & Quality

Our ISO 9001:2015 certified precision machining processes deliver components with exceptional dimensional accuracy and repeatability. Each part undergoes stringent first-article inspection and statistical process control, guaranteeing fit, function, and reliability for your most demanding applications.

/02

Rapid & Scalable Delivery

Leveraging our strategically located manufacturing hubs and integrated partner network, we provide agile production capacity and fast turnarounds. From rapid prototyping to on-demand batch production, we support time-sensitive projects with lead times optimized for your schedule.

/03

Expert Engineering Partnership

Rely on our engineering team for comprehensive design-for-manufacturability (DFM) analysis and technical support. We collaborate to optimize part design, material selection, and manufacturing strategy, maximizing product performance, quality, and cost-efficiency from prototype through full-scale production.

ADVANTAGES

Advantages of Precision Machining

Precision machining delivers critical value by producing components with uncompromising accuracy and repeatability, meeting the stringent demands of modern engineering.

High Accuracy & Tight Tolerances

Achieve micron-level precision essential for aerospace flight-critical parts and medical implant manufacturing.

Exceptional Production Consistency

Ensure identical quality from prototype to high-volume production, guaranteeing reliable assembly performance.

Broad Material Versatility

Machine a comprehensive range of materials, from high-performance alloys to medical-grade plastics and composites.

Complex Geometry Machining

Utilize multi-axis CNC centers to produce intricate shapes and internal features unattainable with conventional methods.

Reduced Material Waste & Sustainable Manufacturing

Minimize raw material scrap through precision cutting, enhancing cost efficiency and supporting eco-friendly practices.

Rapid, Automated Production Speeds

Accelerate time-to-market with fast-turnaround capabilities, powered by automated and optimized workflows.

APPLICATIONS

Applications of Precision Machining

High-precision machining is essential for manufacturing critical components where dimensional accuracy, material integrity, and performance are paramount.

Engine & Powertrain Components

Manufacturing of pistons, connecting rods, and housings with exacting tolerances to optimize performance, durability, and power output in demanding propulsion systems.

Precision Electronic Components

Fabrication of connectors, enclosures, and substrates requiring micron-level precision and superior surface finishes to ensure signal integrity, reliability, and miniaturization in electronic assemblies.

Medical Implants & Surgical Instruments

Production of biocompatible implants and complex surgical tools with exceptional surface finishes and stringent cleanliness to meet rigorous medical-grade standards and ensure patient safety.

Aerospace Structural Fasteners

Machining of high-strength, lightweight bolts, pins, and fittings from advanced alloys, engineered to withstand extreme environmental stresses while maintaining absolute reliability in flight-critical applications.

High-Precision Molds & Dies

Creation of intricate molds, dies, and tooling with exceptional dimensional stability and wear resistance, essential for consistent, high-volume production of precision parts.

Aerospace

Automotive

Molds & Dies

Medical

Marine

Energy

Precision Machining Latest News

Stay informed with the latest updates and announcements from JS Precision. Learn about our most recent projects.

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Precision Machining FAQs

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JS Precision's precision machining services are compatible with a wide range of engineering materials. Commonly machined metals include aluminum, stainless steel, titanium, and brass, while engineering plastics like PEEK, Delrin, and Ultem are also frequently processed. Material selection is based on your application's requirements for strength, weight, corrosion resistance, thermal stability, and cost-effectiveness.

Modern multi-axis CNC machining excels at producing highly complex geometries that are challenging or impossible with conventional methods. This includes intricate 3D contours, deep cavities, fine internal features, and undercuts. These capabilities are ideal for prototyping and producing complex components for industries such as aerospace, medical devices, and robotics.

At JS Precision, we routinely hold tight tolerances down to ±0.005mm for critical dimensions, with specific features achievable to even tighter specifications. Surface finishes can be produced from standard machined finishes to very fine finishes (e.g., Ra 0.4 μm or better) through secondary operations like grinding or polishing, meeting the demands of high-precision applications.

CNC machining is the optimal choice when your project requires high dimensional accuracy, complex geometries, rapid prototyping, or low-to-medium volume production with excellent material properties. It is particularly suited for functional prototypes, jigs and fixtures, and end-use parts in sectors like automotive, aerospace, and industrial equipment.

To provide an accurate and timely quotation, please submit your 3D CAD model (STEP or IGES preferred) and/or detailed 2D drawings. Key details should include material specification, desired quantity, critical tolerances, and any required post-processing or surface finishes. This allows us to conduct a thorough Design for Manufacturability (DFM) review and provide the most competitive pricing and lead time.

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