Custom Heat Sinks
MachMaster produces custom aluminum heat sinks using aluminum extrusion and precision CNC machining for electronics, industrial equipment, and thermal management applications. Tight tolerance control supports accurate fit, consistent dimensions, and dependable performance across prototypes and production runs.
Choose Your Heat Sink Material
Common heat sink materials are primarily aluminum and copper. Aluminum is used most often because it is lightweight, cost-effective, easy to extrude and machine, and has good thermal conductivity. Copper offers significantly higher thermal conductivity but is heavier and more expensive, so it is typically used for high-power, high-heat-flux, or space-constrained applications.
Aluminum
6061-T6 · 6063 · ADC12 / A380
Low cost, lightweight, easy extrusion
- LED lamps
- Set-top boxes
- power supplies
- Inverters, converters
Copper
T2 copper
High thermal conductivity, compact space
- high-end air cooling
- cold plates
- heat pipes
- vapor chambers
Our Process from File to Finished Part
01 Upload CAD File
Submit CAD drawings and RFQs with part specs and application details to get fast engineering support.
02 Review & Quote
Receive pricing and DFM feedback to ensure your design is ready for manufacturing.
03 Start Production
We begin machining or molding with selected materials and strict quality standards.
04 Parts Delivered
Parts are carefully inspected, securely packed, and shipped on time—ready for your next stage.
Our Heat Sink Production Shop
Custom Heat Sinks Overview
What Are Custom Heat Sinks?
Components of a Custom Heat Sink
- Base Plate: Transfers heat from the electronic component into the heat sink.
- Cooling Fins: Increase surface area to help release heat more efficiently.
- Mounting Features: Holes, slots, or threaded sections support accurate installation.
- Thermal Contact Surface: Provides a smooth connection between the heat source and heat sink.
- Additional Features: Channels, cutouts, and custom shapes can be CNC machined to match specific space and cooling requirements.
Why Are Custom Heat Sinks Expensive?
- Material Choice: Aluminum grades and specialty metals affect both material and machining costs.
- Complex Geometry: Thin fins, deep channels, and detailed features require longer CNC machining time.
- Tight Tolerances: Precise dimensions demand careful setup, inspection, and quality control.
- Surface Finishing: Anodizing, sandblasting, polishing, or plating adds extra production steps.
- Low Production Volume: Prototypes and small batches usually have a higher cost per part.
Common Surface Finishes for Custom Heat Sinks
- Anodizing: Builds a protective oxide layer on aluminum for better wear and corrosion resistance.
- Sandblasting: Creates a uniform matte texture and helps prepare the surface for further finishing.
- Polishing: Produces a smoother, brighter surface and improves overall appearance.
- Plating: Adds a metal coating for enhanced corrosion resistance, wear resistance, or visual finish.
- Powder Coating: Forms a tough protective layer that offers strong surface durability.
Key Features of Custom Heat Sinks
- Precision Machining: CNC manufacturing supports tight tolerances, accurate mounting features, and consistent dimensions.
- Efficient Heat Transfer: Fins, channels, and base thickness can be designed around specific thermal requirements.
- Material Options: Aluminum is widely used for its lightweight structure, machinability, and thermal conductivity.
- Custom Geometry: Heat sinks can be shaped to fit compact spaces, unusual layouts, or specialized components.
- Surface Finishing: Anodizing, sandblasting, polishing, and plating can improve protection and appearance.
- Reliable Durability: Proper material selection and machining help heat sinks withstand demanding operating conditions.
- Flexible Production: CNC machining works well for prototypes, small batches, and customized production runs.
Popular Brands Specializing in Custom Heat Sinks
- Boyd: Offers custom extruded, bonded-fin, brazed, skived, and die-cast heat sinks for demanding thermal applications.
- Wakefield Thermal: Provides engineered heat sinks, thermal extrusions, heat pipes, and liquid-cooling solutions from prototype through production.
- Advanced Thermal Solutions (ATS): Specializes in heat sinks, liquid cooling, thermal testing, and customized electronics cooling solutions.
- BY Thermal: Manufactures custom aluminum and copper heat sinks using skiving, extrusion, CNC machining, and heat-pipe integration.
Conclusion
Discover More Options
If you’re searching for more choices, explore our full collection of products. We’ve picked out some great options for you:
Still haven’t found what you’re looking for? Don’t hesitate to contact us. We’re available around the clock to assist you.
Tell Us What You Need
At MachMaster, our engineers review every request and respond with tailored solutions.
Your files are kept strictly confidential and will only be used for quoting and manufacturing purposes.
- info@machcncmaster.com
- +86 139 5006 6486