Copper CNC Machining Services

YUANYI provides precision copper CNC machining services for electrical connectors, busbars, heat sinks, electrodes, and other custom components. We support CNC milling and turning of C110 copper, from one-off prototypes to low-volume production, with engineering support to meet your drawing requirements.

Custom CNC machined copper parts including electrical connectors, cooling plates and precision components

±0.005 mm

Achievable Tolerance

3–5 Days

Rapid Prototyping

5-Axis CNC

Complex Titanium Parts

ISO 9001

Quality Management

Titanium CNC Machining Capabilities

From complex geometries to tight tolerances, get the machining precision and engineering support your copper parts require. Find the right manufacturing approach for your design and production needs.

CapabilityYUANYI Copper Machining
CNC Processes3-, 4-, and 5-Axis Milling; CNC Turning; Mill-Turn
Copper MaterialsC110 (ETP Copper); other grades upon review
Achievable Tolerance±0.005 mm for suitable features
Surface RoughnessTypically Ra 1.6–3.2 μm, depending on the process
Maximum Part SizeSubject to machine capacity, geometry, and fixturing
Production VolumeSingle Prototypes to Low-Volume Production
Prototype Lead TimeTypically 3–5 business days for suitable projects
Quality InspectionDimensional Inspection, CMM, FAI Upon Request

Copper Grades We Machine

Choosing the right copper grade helps balance electrical conductivity, thermal performance, machinability, and cost. Compare common copper materials to find the best fit for your part’s functional and manufacturing requirements.

Copper GradeKey PropertiesTypical CNC Machined Parts
C101 Oxygen-Free Electronic (OFE) Very high purity and conductivity; extremely low oxygen content. Electrical contacts, vacuum-related components, specialized conductive parts.
C102 Oxygen-Free Copper (OF) Excellent electrical and thermal conductivity with low oxygen content. Precision electrical connectors, thermal components, conductive fittings.
C145 Tellurium Copper Improved machinability while retaining useful electrical conductivity. Precision connectors, threaded electrical components, machined contacts.

Custom CNC Machined Copper Parts

Explore custom CNC machined copper parts for electrical, thermal, and industrial applications, ailored to your design requirements.

CNC machined copper busbars and electrical connectors with precision mounting holes

Copper Busbars & Electrical Connectors

Precision copper connectors and busbars with mounting holes and conductive contact surfaces.

CNC milled copper cooling plate with machined channels and mounting holes

Copper Heat Sinks & Cooling Plates

Custom copper cooling plates with machined channels, pockets, and flat contact surfaces.

Precision CNC machined copper electrode with detailed milled features

Precision Copper Electrodes

CNC machined copper electrodes with precise profiles and detailed features.

CNC turned copper fittings and connectors with precision bores and threads

CNC Turned Copper Components

Precision turned copper parts with accurate diameters, bores, threads, and mating features.

CNC Milling and Turning for Titanium

3-Axis CNC Machining Shop

Copper CNC Milling

Suitable for copper plates, busbars, electrodes, and components with pockets, channels, holes, and multi-sided features. Tooling and cutting strategies help control burrs and maintain dimensional accuracy.

Precision Turning Services

Copper CNC Turning

Ideal for cylindrical copper parts such as sleeves, bushings, pins, and threaded connectors. Produces accurate diameters, bores, shoulders, and concentric features.

Mill-Turn Compound Machining

Copper CNC Mill-Turn Machining

Combines turning and milling for copper components with both cylindrical and non-rotational features, potentially reducing setups and improving positional consistency.

Copper Machining Challenges & Solutions

Avoid burrs, surface damage, and dimensional issues in your copper parts. Understanding how copper behaves during CNC machining helps improve part quality and reduce manufacturing risks.

Tool Adhesion & Chip Control

Soft, ductile copper may adhere to cutting tools and form continuous chips, affecting surface finish and machining stability.

OUR APPROACH

Sharp tools, suitable cutting parameters, and effective chip evacuation help reduce material adhesion.

Burr Formation

Copper can develop burrs around holes and machined edges, potentially affecting assembly and electrical contact surfaces.

OUR APPROACH

Optimized toolpaths and controlled deburring help produce clean edges without damaging critical features.

Surface Scratches & Contact Quality

Copper's relatively soft surface is susceptible to scratches and handling marks, especially on functional contact areas.

OUR APPROACH

Careful fixturing, handling, finishing, and inspection help protect specified surface conditions.

Thin-Wall Deformation & Flatness

Thin copper plates and slender features may deform during clamping or machining, affecting flatness and dimensional accuracy.

OUR APPROACH

Suitable fixturing, machining sequences, and finishing allowances help reduce distortion.

Copper Surface Finishes & Plating

Choose the right surface finish to protect your copper parts, maintain reliable electrical contact, and meet assembly requirements.

As-machined CNC copper component with deburred edges and natural copper surface

As-Machined & Deburred

Clean machined surfaces with burrs removed for reliable assembly and functional contact areas.

Polished CNC machined copper component with smooth reflective surface

Copper Polishing

Improves surface appearance and smoothness for visible or specified contact surfaces.

Tin-plated copper electrical component with protective silver-colored finish

Tin Plating

Helps reduce surface oxidation and supports solderability and electrical contact requirements.

Nickel-plated precision copper component with corrosion-resistant surface finish

Nickel Plating

Provides a protective barrier for copper components requiring corrosion resistance or wear protection.

Consider Plating Thickness Before Machining:Specify plating thickness, masked areas, and critical mating dimensions in your drawing. Coating buildup can affect fit, threads, and electrical contact performance.

Quality Control for CNC Machined Copper Parts

Ensure your copper parts meet critical dimensions, surface requirements, and assembly specifications through careful inspection and documented quality control.

CMM inspection for precision CNC machined parts
Dimensional Inspection

Critical dimensions, hole positions, diameters, and geometric tolerances are verified against approved drawings using CMMs and suitable measuring instruments.

Flatness & Surface Inspection

Copper contact surfaces and mating faces are checked for specified flatness, surface finish, scratches, and other visible defects.

Burr & Edge Inspection

Machined edges, drilled holes, and electrical contact features are inspected for unwanted burrs and sharp edges that may affect assembly or performance.

Inspection Reports & Traceability

Dimensional inspection reports, First Article Inspection (FAI), and copper material certificates can be arranged according to project requirements.

FAQ About Copper CNC Machining

Copper can be challenging to machine because of its ductility, tendency to form burrs, and potential tool adhesion. Suitable tooling, cutting parameters, and fixturing help achieve accurate features and clean surfaces.

C110 is widely used for electrical and thermal components, while C145 offers improved machinability. Oxygen-free grades such as C101 and C102 may be suitable when purity and conductivity requirements are important. Material availability is reviewed for each project.

Tolerances as tight as ±0.005 mm may be achievable for suitable features. Actual capability depends on part geometry, material condition, dimensions, and inspection requirements.

Yes. Custom copper busbars and connectors can include mounting holes, pockets, contact faces, and other features based on your drawings and functional requirements.

Tin and nickel plating can be considered for copper parts depending on their electrical, corrosion, and assembly requirements. Specify coating thickness, contact areas, and critical dimensions so finishing feasibility can be reviewed.

No. Projects can range from individual prototypes to low-volume production. The most economical manufacturing approach depends on part complexity and order quantity.

Suitable prototype orders may be completed in approximately 3–5 business days. Lead time depends on material availability, part complexity, quantity, inspection, and surface finishing requirements.

Send your 2D drawing or 3D CAD model, copper grade, quantity, required tolerances, surface finish, and delivery requirements. Highlight any critical electrical or thermal contact surfaces.

Get a Quote for Custom Copper Parts

Have a copper part ready for manufacturing? Share your CAD files, material requirements, and quantity. Our team will review your design and provide a tailored machining quote.

Have a CAD Drawing Ready?

Request A Quote
Upload your drawing and get a quote within 24 hours.