High-Precision CNC Machining for Brass & Copper Parts

Specialized fabrication of C110 Electrolytic Tough Pitch and C360 Brass for high-conductivity connectors and thermal management. Delivering burr-free precision with ±0.01mm tolerances and anti-tarnish protection. Learn more about our expertise.

Dedicated Production Environment: Eliminating Cross-Contamination

Non-ferrous machining cell with blue lighting

ProtoBatch CNC operates a specialized non-ferrous machining cell designed specifically for high-conductivity metals. By isolating these materials from carbon steel processing, we prevent ferrous particle migration and maintain the pristine surface finish required for electrolytic tough pitch copper.

Our copper machining factory utilizes high-RPM spindles and independent coolant loops. This specialized setup prevents "material gumming" and ensures that soft alloys like C110 and C360 brass are machined with sharp, clean cuts and zero thermal distortion.

We adhere to strict RoHS compliant machining protocols. Our facility implements rigorous material segregation to preserve the purity of copper swarf, ensuring 100% traceability and maintaining the high-value recycled scrap purity necessary for sustainable industrial supply chains.

Material handling and segregation are critical to ProtoBatch’s operations, with a focus on proper material control to maintain quality standards.

Swiss Turning Fleet

Over 20 Star and Citizen Swiss-type lathes optimized for high-volume brass screw machining, delivering precision connectors with 24/7 "lights-out" efficiency.

Material Segregation

Strict separation prevents ferrous embedding in soft metals, a critical requirement for high-voltage electrical copper parts and oxygen-free components.

Anti-Gumming Control

Advanced coolant filtration removes micro-fine particles instantly, solving "gumming" challenges and ensuring burr-free edges on complex CNC milled copper.

Material Selection Guide: Balancing Conductivity vs. Machinability

Brass C360/C260: Speed and Precision

Custom precision CNC turned brass components and fittings

Alloys: C360 (Free Machining), C464 (Naval Brass), Lead-Free Brass
Key Features: Exceptional chip breaking, high-speed CNC turning capability, and natural corrosion resistance.
Applications: Precision brass fittings, sensor housings, fluid control valves, and electrical standoffs.

Copper C110/C101: Thermal & Electrical Peak

CNC milled C110 electrolytic tough pitch copper components

Alloys: C110 (ETP Copper), C101 (Oxygen-Free Electronic), Beryllium Copper
Key Features: 101% IACS electrical conductivity, superior thermal dissipation, and high ductility for complex milling.
Applications: High-density heatsinks, electrical bus bars, power connectors, and EV battery terminals.

Specialized CNC Machining: Mastering the "Soft & Sticky" Challenge

Close-up macro shot of tool tips engaging metal

Precision CNC Turning for Brass & Copper Parts

Utilizing high-speed live tooling and specialized chip-breakers, we achieve mirror-like finishes on brass turned parts and copper connectors. Our process eliminates material adhesion, ensuring burr-free threads and tight tolerances for high-conductivity industrial applications.

CNC Milling for Complex Copper Heatsinks

We utilize polished carbide end mills to prevent "gumming" when machining C110 electrolytic tough pitch copper. This enables the production of high-aspect-ratio cooling fins and intricate 3D geometries required for high-performance thermal management parts.

Swiss Micro Machining & Precision Threading

Our Swiss lathes produce micro brass parts and Swiss machined pins down to 0.5mm diameter. We specialize in high-precision knurled brass nuts and threaded copper inserts, maintaining ±0.01mm accuracy for demanding electronic and aerospace assemblies.

Solving the Critical Pain Points of Copper & Brass Machining

Precision copper components with anti-tarnish protection

Advanced Anti-Tarnish & Precision Deburring Protocol

Copper and brass are prone to rapid oxidation and "gummy" burrs during fabrication. ProtoBatch CNC utilizes proprietary copper passivation and industrial vacuum packaging to ensure your components arrive with zero tarnishing and maximum shelf life.

Our burr-free guarantee for soft metals leverages high-speed polished carbide tooling and thermal deburring cycles, delivering perfectly clean edges even on complex heatsinks and micro-connectors.

For mission-critical electrical applications, we provide verified C101 oxygen-free copper conductivity testing and XRF material analysis to ensure 101% IACS performance standards.

Review Our Quality Standards

Anti-Oxidation Seal

Specialized passivation and vacuum-sealed packaging protect parts from atmospheric moisture and surface darkening during transit.

Zero-Burr Guarantee

Advanced on-machine deburring eliminates edge-rollover, ensuring precision fits for C360 brass and C110 copper components.

Conductivity Verification

Rigorous testing for C101 and C110 ETP copper ensures optimal thermal and electrical conductivity for industrial power applications.

One-Stop Surface Treatments: Function Meets Aesthetics

Functional Plating
Enhance conductivity and durability with our functional plating services. We provide gold-plated contacts for low-resistance signal transmission, nickel-plated brass for corrosion resistance, and silver or tin plating for superior solderability, ensuring optimal performance and longevity.
Chemical Conversion
Protect your ETP copper components from tarnishing and maintain their integrity. Our chromate conversion and passivation processes ensure high electrical conductivity while effectively preventing surface oxidation, even in demanding industrial environments.
Aesthetic & Industrial Finishes
Achieve custom textures and finishes for any application with our comprehensive services. Options include black oxide for optical equipment, mirror-polished brass for decorative hardware, and bead blasting for a professional, matte industrial finish, tailored to your specific needs.
Electropolishing
Enhance corrosion resistance and achieve a smooth, polished surface on stainless steel parts. Our electropolishing services remove surface imperfections and create a bright, clean finish, ideal for medical, food processing, and high-purity applications.

Genuine Material Guaranteed: Lab-Grade XRF Analysis & Precision QC

At ProtoBatch, we eliminate the risk of material substitution through rigorous verification. Utilizing advanced XRF Spectrometry, we provide real-time validation of Cu 99.99% purity for your electrolytic tough pitch copper components. Our ISO 9001 certified facility ensures every order is backed by comprehensive MTR reports, securing the thermal and electrical performance your application demands.

Material Verification: 100% spectral analysis for C110, C101, and C360 alloys to ensure RoHS compliance.
Non-Contact Vision Systems: Precision metrology designed to inspect critical dimensions without scratching sensitive soft metal surfaces.
Thread & Surface Integrity: Specialized gaging for soft brass and copper threads to maintain ±0.01mm tolerance and burr-free finish.

Technician using XRF Spectrometer to verify 99.99% copper purity for precision CNC machining

Powering Innovation Across Critical industries

Precision electrical electronic components and connectors

Electrical & Electronics

Leveraging high-purity C110 copper for electronic components machining, ensuring maximum IACS conductivity and signal integrity.

Custom bus bars & terminals
Precision electronic connectors
High-conductivity power contacts

Thermal Management

Advanced copper cooling parts including complex heatsinks and cold plates designed for superior heat dissipation in power electronics.

CNC milled copper heatsinks
Liquid cooling cold plates
High-aspect ratio cooling fins

Industrial brass plumbing fittings and valves

Plumbing & Fluid

Corrosion-resistant brass plumbing fittings and valve bodies engineered for durability and leak-proof performance in fluid systems.

Custom machined brass fittings
Precision valve bodies & stems
High-pressure fluid nozzles

Precision industrial brass parts and sensor housings

Industrial Automation

High-durability industrial brass parts designed for repetitive motion, providing low friction and wear resistance in robotic systems via precise machining.

Machined sensor housings
Wear-resistant brass gears
Actuator & pneumatic components

Decorative brass machining for architectural hardware

Decorative & Consumer

Premium decorative brass machining for luxury consumer goods and architectural hardware with flawless surface finishes.

Architectural brass hardware
Custom knobs & luxury trims
High-polish aesthetic components

Aerospace Components

High-precision metal parts for aerospace applications, meeting strict quality and tolerance requirements for flight-critical systems.

Custom aerospace fasteners
Precision-machined brackets
High-strength structural parts

Scalable Manufacturing: From Prototype to Production

Prototyping (1-10 pcs)

Accelerate R&D with copper rapid prototyping. We offer 24h delivery for initial designs, ensuring your thermal and electrical validations stay on schedule.

Low-Volume (10-500 pcs)

Cost-effective low volume brass parts via precision CNC turning. Ideal for bridge production or specialized industrial equipment without expensive tooling.

Mass Production (1000+ pcs)

High volume brass turning powered by automated Swiss lathes. We achieve maximum efficiency and lights-out manufacturing to drive down your per-part cost.

1
Design & Rapid Prototyping
50
Bridge & Low-Volume Runs via CNC machining
10000
Continuous Mass Production

Streamlined Manufacturing Process

Upload CAD Models

Securely submit your STEP, IGS, or DXF files to initiate our digital workflow for precision metal materials like brass and copper parts.

Expert DFM Analysis

Our engineers optimize geometries to reduce copper waste and raw material costs, ensuring high-efficiency machining for complex heatsinks.

Instant Industrial Quote

Receive a detailed, transparent price breakdown within 2 hours, tailored for both rapid prototyping and high-volume production runs.

Precision & Delivery

Real-time order tracking combined with specialized anti-tarnish vacuum packaging ensures your stainless steel material parts arrive in pristine condition.

Precision Portfolio: Brass & Copper Masterpieces

Explore our gallery of high-precision components. From complex thermal management solutions to high-conductivity electrical connectors, we demonstrate the CNC machining "Show, Don't Just Tell" philosophy through flawless machining and anti-tarnish finishes.

Precision CNC turned C360 brass sensor housing with diamond knurling — **CNC turned C360 Brass Housing:** High-speed Swiss turning with precision diamond knurling for industrial sensor applications.

C110 ETP copper heatsink with precision milled high aspect ratio fins — **Thermal Excellence:** C110 ETP copper heatsink featuring high aspect ratio fins for maximum heat dissipation.

Gold plated beryllium copper connector pins Swiss machined — **Swiss-machined Electrical Contacts:** Swiss-machined beryllium copper pins with gold plating for superior signal integrity.

Complex 5-axis machined brass manifold for fluid control systems — **Complex Geometry:** 5-axis CNC milled brass manifold designed for high-pressure fluid control and zero-leak performance.

Custom C101 oxygen-free copper bus bars for EV power electronics — **Power Distribution:** Custom C101 oxygen-free copper bus bars optimized for EV battery systems and power electronics.

Burr-free copper machining detail with anti-tarnish passivation — **Surface Integrity:** Burr-free milling on electrolytic copper with specialized passivation to prevent oxidation.

Expert Insights: CNC Machining Brass & Copper

What is the difference between C110 and C101 Copper?

C110 (Electrolytic Tough Pitch) is the industrial standard with 99.9% purity, ideal for general electrical components. C101 (OFHC) is 99.99% oxygen-free, providing maximum conductivity (101% IACS) and superior ductility for critical high-vacuum, semiconductor, and high-end audio applications.

Why is pure copper more expensive to machine than brass?

Copper is "gummy" and prone to work hardening, requiring specialized sharp tools and slower feed rates to manage chip evacuation. C360 Brass contains lead, making it a "free-machining" alloy that allows for high-speed CNC turning and significantly lower production costs for high-volume fittings.

How do you prevent copper parts from tarnishing during shipping?

To ensure an oxidation-free finish, we utilize a rigorous post-process protocol including ultrasonic cleaning, optional passivation, and immediate vacuum sealing with anti-tarnish paper and desiccants. This maintains the aesthetic and conductive integrity of your copper parts from our factory to your assembly line during shipping.