Custom CNC machined aluminum heat sink with precision cooling fins

PRECISION THERMAL COMPONENT MANUFACTURING

Custom CNC
Machined Heat Sinks
Manufacturer

Aluminum and copper. Precision interfaces.
Built around your assembly.

Turn your drawings into custom heat sinks with machined fins, mounting features and controlled contact surfaces—helping your thermal design fit the equipment it serves.

Custom CNC Machining
Aluminum & Copper
OEM Support

Bring your next heat sink design into production.

Request a Quote

Explore Our Capabilities →

PRODUCT OVERVIEW

What Are CNC Machined Heat Sinks?

Precision-machined bases and fins move heat away from electronic and power components. Custom dimensions connect thermal requirements with the space and mounting features of your equipment.

Precision machined heat sink showing cooling fins, base and mounting holes

A thermal component.
A precise mechanical fit.

Custom machined heat sinks follow your drawing instead of a fixed catalog profile. Aluminum or copper can be machined into defined bases, fins and interfaces, giving your team control over the features that matter at assembly.

Heat Dissipation

Fins expand the exposed surface area, helping transfer heat into the surrounding air when matched to your operating conditions.

Precision Fit

Drawing-defined dimensions and mounting holes align with your equipment, reducing the need to adapt surrounding parts.

Design Flexibility

Tailored fin layouts, base thicknesses and contact surfaces accommodate your mechanical and thermal priorities.

Need a heat sink that fits your equipment and drawing?

Discuss Your Heat Sink Design

MANUFACTURING ADVANTAGES

Key Advantages of Our
Custom CNC Heat Sinks

Drawing-based CNC heat sink manufacturing combines flexible geometry with defined quality requirements. Bring critical interfaces, material choices and production needs into one coordinated manufacturing plan.

Precision Machining

Defined base dimensions, mounting features and contact surfaces help your heat sink fit the assembly with fewer integration adjustments.

Custom Fin Geometry

Drawing-specific fin height, spacing and thickness accommodate your airflow and packaging priorities, giving your thermal design room to work.

Material Flexibility

Aluminum and copper options let you balance conductivity, component weight and manufacturing cost for the application.

Complex Features

Integrated pockets, holes, slots and threads consolidate mechanical interfaces, helping simplify the surrounding assembly.

Quality Inspection

Checks against approved drawings focus attention on critical features, giving your incoming inspection a clear acceptance basis.

OEM Production

Prototype and repeat-production support carry approved specifications through successive orders, keeping project coordination consistent.

Make your critical requirements part of the manufacturing plan.

Review Your Heat Sink Project

MATERIAL OPTIONS

Aluminum & Copper
Heat Sink Materials

Conductivity, weight and machining behavior shape the right material choice. JBT reviews the specified alloy alongside geometry and finishing requirements to help you balance performance priorities and production cost.

Aluminum Heat Sinks

Low weight and good machinability make aluminum a practical choice for power supplies, controllers and electronic enclosures. Specify Aluminum 6061 or your required alloy to align the component with your design.

Copper Heat Sinks

Higher thermal conductivity supports heat spreading around concentrated sources. Specify C110 copper or your required grade when thermal priorities justify the additional weight and manufacturing cost.

Property	Aluminum	Copper
Thermal Conductivity	Good; alloy dependent	Higher; grade dependent
Weight	Lightweight	Heavier
Material Cost	Generally lower	Generally higher
Machinability	Good for suitable alloys	Grade and geometry dependent
Typical Priority	Weight and cost balance	Heat spreading in limited space
Surface Treatment	Anodizing and other specified finishes	Plating and protective finishes

Share your drawing and operating priorities for a material review.

Discuss Material Options

HEAT SINK DESIGN

Precision Heat Sink Design
for Effective Thermal Management

Fin geometry, heat spreading and thermal contact work together. Drawing-based manufacturing and a manufacturability review help translate your thermal concept into a component that can be made and assembled.

Fin Geometry

Fin height, thickness and spacing balance exposed area with airflow resistance, helping the structure suit the cooling environment.

Base Thickness

The base spreads heat and supports the assembly. Define its geometry around heat-source position and mechanical fit.

Airflow Conditions

Align fins and passages with natural or forced airflow so the available surface can contribute to heat removal.

Thermal Resistance

Specify heat load, ambient conditions and a target thermal resistance to make application validation meaningful.

Contact Surface

Drawing-defined flatness and roughness support a consistent thermal interface when paired with suitable assembly pressure.

Mounting Design

Holes, threads and locating features position the heat sink securely, supporting repeatable mechanical integration.

Thermal results depend on the complete assembly and operating conditions. Define and validate heat load, airflow, interface materials and temperature targets for your application.

Turn your fin, base and mounting requirements into a manufacturable part.

Submit Your Heat Sink Design

CNC MANUFACTURING CAPABILITIES

Custom CNC Heat Sink
Manufacturing Process

CNC milling, drilling and surface machining turn approved drawings into defined fins and mechanical interfaces. Coordinated setups and inspection keep manufacturing requirements visible from the first operation to the finished part.

CNC milling tool machining cooling fins on a metal heat sink

Precision milling for
custom thermal components.

Part geometry, specified alloy and critical tolerances guide the machining approach. Custom fixtures and appropriate tool paths support access to fins, pockets and mounting features, helping preserve the dimensions your assembly relies on.

CNC Milling
Drilling & Tapping
Surface Machining
Custom Fixtures
Deburring
Dimensional Inspection

01 · Drawing Review

Identify material, dimensions and critical interfaces so the manufacturing plan follows your approved requirements.

02 · Material Preparation

Prepare the specified alloy and workholding to give machining operations a suitable starting point.

03 · CNC Programming

Plan tool paths and setups around feature access, helping make the geometry practical to manufacture.

04 · Precision Machining

Machine bases, fins, holes and custom features to connect the thermal structure with your mechanical design.

05 · Finishing & Deburring

Remove burrs and apply agreed finishes to support handling, appearance and assembly requirements.

06 · Final Inspection

Check drawing-defined features and agreed acceptance criteria before packaging the finished components.

Share your CAD files to review the route from raw material to finished heat sink.

Explore Custom Manufacturing

SURFACE FINISHING

Surface Finishing Options
for Custom Heat Sinks

Specified finishes help manage corrosion resistance, appearance and assembly compatibility. Reviewing coating thickness and thermal contact areas early keeps the finish aligned with the function of the part.

Black Anodizing

A protective oxide finish for suitable aluminum alloys combines corrosion resistance with a dark appearance. Define thickness and masking so critical interfaces remain within specification.

Clear Anodizing

A protective anodized surface maintains a metallic appearance on suitable aluminum components, supporting equipment that needs a consistent, understated finish.

Nickel Plating

A specified plating option for compatible materials can provide surface protection and defined interface characteristics. Material compatibility and coating requirements guide process review.

As-Machined Finish

Leaving appropriate surfaces uncoated preserves bare-metal contact where required. Specify roughness, cleanliness and handling requirements to support assembly.

Images illustrate product geometries and appearance; the exact coating is defined in the approved finish specification.

Finishes can change dimensions and thermal interfaces. Identify coating thickness, masking areas and contact surfaces that must remain uncoated on your drawing.

Make finish requirements part of your dimensional and assembly review.

Discuss Surface Finishing

PRECISION & SPECIFICATIONS

Custom Heat Sink Machining
Tolerances & Specifications

Drawing-defined dimensions connect your heat sink with the rest of the equipment. Critical-feature review and agreed inspection methods give your team a clear basis for checking fit and thermal contact.

Precision where it matters.

Base flatness, hole location and surface roughness influence different parts of the assembly. Identify the critical characteristics on your drawing so machining and measurement can focus on the features your design depends on.

Achievable tolerances depend on alloy, size, geometry, workholding and inspection method. Numerical values are confirmed after manufacturing review.

Feature	Requirement to Define	Why It Matters
Overall Dimensions	Drawing-defined envelope and tolerances	Fit within the available installation space
Base Flatness	Contact area, datum and flatness limit	Consistent contact with the thermal interface
Surface Roughness	Specified Ra and measurement area	Control of critical contact surfaces
Fin Thickness & Spacing	Geometry, tolerances and inspection access	Fin integrity and airflow clearance
Mounting Hole Position	Datums, true position and hole sizes	Alignment with the surrounding assembly
Threads & Mounting Features	Thread standard, depth and engagement	Repeatable fastening and integration
Material & Finish	Grade, coating thickness and masking	Alignment of material and interface requirements
Inspection Documentation	Critical features and report scope	Clear acceptance criteria for incoming review

Send the critical dimensions and inspection requirements with your CAD files.

Review Your Technical Drawing

QUALITY ASSURANCE

Precision Heat Sink
Quality Control & Inspection

Drawing-based inspection connects machining output with your acceptance requirements. Reviewing dimensions, surface condition and mounting features helps identify deviations before parts reach your assembly line.

Dimensional inspection of precision machined metal components — Inspection process reference.

Build quality into
the manufacturing plan.

Fin integrity, contact surfaces and mounting details each need an appropriate check. Agreed checkpoints and reporting scope give both teams a shared view of what must be verified before shipment.

Discuss critical dimensions, material documents and inspection reports during quotation so the quality plan reflects your project.

Incoming Material Check

Compare specified grades and applicable supplier documents with the order requirements, helping prevent material mismatches.

Dimensional Inspection

Measure critical features using appropriate equipment, giving your team evidence against drawing requirements.

Surface Inspection

Review burrs, machining marks and visible defects to support handling and contact-surface requirements.

Mounting Feature Check

Check holes, threads and locating interfaces so the heat sink can integrate with the intended assembly.

In-Process Inspection

Use agreed production checkpoints to detect deviations before later operations add cost or complexity.

Final Quality Review

Review finished components and agreed documentation against the acceptance criteria before packaging.

Define what your incoming inspection needs to verify.

Discuss Quality Requirements

INDUSTRY APPLICATIONS

Custom Heat Sinks for
Demanding Industrial Applications

Application-specific mounting features and thermal interfaces connect your heat sink to real equipment. Custom geometry helps your design team accommodate heat removal within the available mechanical envelope.

AI Servers & Data Centers

Custom bases, fins and mounting layouts support server electronics and power assemblies, helping accommodate thermal components within dense equipment.

EV Power Electronics

Drawing-defined interfaces fit power conversion and inverter-related assemblies, supporting heat dissipation within vehicle packaging constraints.

Semiconductor Equipment

Controlled contact surfaces and compact mounting features support temperature-sensitive equipment where fit and interface quality matter.

Laser Equipment

Machined thermal mounts and fin structures accommodate laser-system electronics, helping connect localized heat sources with the cooling environment.

Industrial Automation

Custom heat sinks fit controllers, drives and industrial power supplies, making thermal integration practical inside machine assemblies.

Medical Equipment

Drawing-specific thermal components support electronic instruments and equipment assemblies with defined dimensional and integration needs.

Match your equipment, installation space and heat load to a custom component.

Discuss Your Application

OEM & CUSTOMIZATION

OEM Custom Heat Sink Manufacturing
from Drawings to Production

Made-to-drawing production connects your CAD geometry with machining, finishing and inspection. A manufacturing review helps resolve feature access and interface requirements before you commit to parts.

Heat sink with engineering drawing and dimensional measurement equipment — Drawing-to-part reference.

Drawing-Based Manufacturing

Your 2D drawings and 3D CAD define the component, keeping dimensions, materials and acceptance requirements tied to the approved specification.

Custom Machining Features

Tailored fins, pockets, slots, holes and threads integrate the thermal component with your mechanical assembly.

DFM Review

Review tool access, critical dimensions and material behavior to identify manufacturing questions while the design can still be refined.

Prototype to Production

Prototype evaluation and repeat manufacturing follow approved requirements, supporting a clear transition from initial samples to recurring orders.

What Do We Need for a Custom Heat Sink Quote?

Share 2D/3D drawings, specified material, surface finish, estimated quantity and target schedule. Add heat load, airflow and assembly requirements where available so the review can address the actual application.

Have a drawing ready? Start with a practical manufacturing review.

Send Drawings for Quotation

WHY PARTNER WITH JBT

Why Choose JBT for
Custom Heat Sink Manufacturing?

A useful supplier review looks at the production route, drawing understanding and inspection plan. JBT coordinates these manufacturing requirements so your team can assess technical fit alongside cost and delivery terms.

CNC machining workshop with enclosed machining centers — Workshop reference supplied in the module brief; discuss facility and equipment details during supplier review.

Manufacturing Experience

CNC and metal-component manufacturing knowledge supports decisions on fixtures, tool access and custom geometry.

Integrated Manufacturing Capabilities

Machining and specified finishing are considered together, helping the delivered component match your integration requirements.

Quality Requirements Review

Agree inspection scope and documentation during quotation so your supplier evaluation rests on project-specific evidence.

Engineering Drawing Review

Early clarification of datums, tolerances and critical interfaces reduces uncertainty before production begins.

Prototype & Volume Manufacturing

Sample and repeat-production planning follow approved requirements, supporting the purchasing stages of your OEM project.

International OEM Support

English-language technical clarification and order coordination keep requirements accessible to your engineering and purchasing teams.

Your Manufacturing Partner for Precision Thermal Components

Connect your drawing, quality plan and production requirements with one project review.

Partner With JBT

HOW TO WORK WITH US

From Heat Sink RFQ
to Finished Parts

A defined workflow carries technical requirements through review, samples and production. Clear approval points help your team make purchasing decisions with the manufacturing scope in view.

01 · Submit Your RFQ

Send drawings, material, quantities and key requirements to establish the scope for a useful manufacturing review.

02 · Engineering Review

Review feature access, critical interfaces, finishing and inspection so technical questions are addressed before quotation.

03 · Quotation & Confirmation

Confirm pricing, applicable tooling, lead times and order conditions to align the commercial scope with the component.

04 · Prototype Manufacturing

Use samples when required to evaluate fit and agreed acceptance criteria before committing to production quantities.

05 · Production & Inspection

Manufacture to approved requirements and check specified features, giving the order a consistent acceptance basis.

06 · Packaging & Delivery

Protect completed components and coordinate shipment under agreed terms so the parts are prepared for onward handling.

Have a heat sink project ready? Send your drawings and quantity requirements.

Start Your Custom Heat Sink Project

FREQUENTLY ASKED QUESTIONS

Frequently Asked Questions
About Custom CNC Heat Sinks

Review material choices, tolerances, prototype planning and quotation requirements. Clear technical inputs help your team move from an initial inquiry to a defined manufacturing scope.

Can JBT manufacture heat sinks according to our drawings?

Yes. Share your 2D drawings, 3D CAD models, specified material and estimated quantities. A manufacturing review identifies the machining features and inspection requirements needed to prepare a relevant quotation.

What materials can be used for custom CNC heat sinks?

Aluminum and copper are common options. Alloy choice depends on conductivity, weight, geometry, finish and cost. Specify your required grade, or share the application priorities for a material discussion.

What machining tolerances can you achieve?

Achievable tolerances depend on component size, alloy, geometry, workholding and measurement method. Mark critical dimensions, datums and contact surfaces on your drawing so they can be reviewed before quotation.

Can you manufacture prototypes before mass production?

Prototype manufacturing can be discussed before repeat production. Samples allow your team to assess fit and application performance against agreed requirements before approving the next stage.

What surface finishing options are available?

Options may include black or clear anodizing for suitable aluminum alloys, specified nickel plating and an as-machined finish. Confirm coating thickness, masking and contact-surface requirements during the project review.

Do you provide thermal simulation or thermal performance testing?

The manufacturing review covers geometry, material and production requirements. Simulation or thermal testing must be specifically agreed for the project, including scope, method and acceptance criteria. Manufacturing inspection alone does not validate thermal performance.

What information is required for a heat sink quotation?

Send 2D/3D drawings, material grade, finish, estimated quantity, target schedule and critical inspection requirements. Heat load, airflow and assembly information help clarify the application when available.

How long does custom heat sink production take?

Lead time depends on material availability, geometry, quantity, finishing and inspection scope. A project-specific schedule is discussed after drawing review and confirmed with the order.

Still have questions? Share your drawings and technical requirements with our team.

Ask Our Manufacturing Team

START YOUR CUSTOM PROJECT

Get a Quote for Your
Custom CNC Heat Sinks

Share your drawings, material specifications and production requirements. A manufacturing review connects your design with a practical machining route and a quotation that reflects the parts you need.

Drawing-Based Review

Your geometry and critical interfaces guide the machining evaluation, helping clarify production requirements before the order.

Customized Manufacturing

Material, finish and dimensional requirements are reviewed together so the component supports your assembly priorities.

OEM Project Support

Prototype and repeat-production planning help your team coordinate technical approval with purchasing requirements.

Include 2D/3D drawings, material grade, finish, estimated quantity and target delivery schedule. Add thermal and assembly requirements where available.

Request Your Heat Sink Quote

Prepare your project details for a manufacturing review.

Ready to discuss your drawings, quantity and production requirements?

Contact Our Manufacturing Team

Custom CNCMachined Heat SinksManufacturer