Custom Aluminum Heat Sinks
HRCCNC manufactures aluminum heat sinks with CNC milled bases, precision fins, threaded mounting features and application-specific surface finishes for electronics, LED lighting, power modules, automation equipment and industrial controls.
CNC + Extrusion
Profiles, pockets, slots, holes and flat mounting faces.
AL 6061 / 6063
Common alloys for thermal performance and machining stability.
Finish Ready
Clear, black, gold anodizing, brushing and deburring.
Request Custom Heat Sink Pricing
Share dimensions, alloy, surface finish, quantity and thermal requirements. A drawing or 3D file helps us quote faster.
Custom Aluminum Heat Sink Types We Manufacture
From standard extruded profiles to multi-operation CNC machined heat sinks, each design can be adapted for fin spacing, base thickness, screw locations, connector clearance and surface treatment.
Square LED Module Heat Sinks
Integrated radial fin and mounting boss design for LED engines, drivers and compact power modules.
- Extruded profile with radial fins
- Machined center hole and screw bosses
- Clear anodizing with clean contact faces
Round Extruded Profile Heat Sinks
Cylindrical finned profiles for enclosures, lighting housings and round thermal assemblies.
- High-ratio aluminum extrusion
- Cutting, facing and bore machining
- Natural, clear or black anodizing
Board Mount Aluminum Heat Sinks
Lightweight horizontal fin heat sinks designed for PCB installation and electronic enclosure clearance.
- Extruded aluminum profile processing
- Mounting tabs and top hole machining
- Bright silver anodized surface
Bracket Mounted Heat Sinks
Angled aluminum heat sinks combining a mounting bracket, base plate and vertical fin section.
- Extrusion, cutting and forming support
- Multi-hole CNC drilling pattern
- Deburred edges and clear anodized finish
Round Radial LED Heat Sinks
Circular aluminum heat sinks with separated fin sectors for radial convection and fixture mounting.
- Radial extrusion and profile cutting
- Central mounting face machining
- Slot, notch and screw clearance processing
Square Radial Extruded Heat Sinks
Square outer profile with a central bore and radial fins for motors, lamps and cylindrical assemblies.
- Custom aluminum extrusion profile
- Center bore and clearance machining
- Champagne or black anodized finish
CNC Machined Plate Fin Heat Sinks
Heavy-duty plate fin heat sinks with precision top mounting patterns for power electronics.
- Thick base CNC surfacing
- Drilling, tapping and countersinking
- Deburring and brushed machining texture
Square Center-Bore Heat Sinks
Square radial fin heat sinks with a large center opening for motors, lamps and custom thermal cores.
- Custom die aluminum extrusion
- Center bore, slot and side detail machining
- Natural or clear anodized aluminum finish
Round Radial Heat Sink Rings
Ring-shaped radial fin heat sinks for cylindrical modules, lighting parts and airflow-driven cooling.
- Precision radial extrusion profiles
- Inner bore and end-face machining
- Clear anodizing for stable surface quality
Black Anodized Fin Heat Sinks
Straight fin aluminum heat sinks with a durable black finish for corrosion resistance and appearance.
- Cut-to-length aluminum extrusion
- Matte or satin black anodizing
- Masking for contact and grounding faces
Gold Anodized Mini Heat Sinks
Compact aluminum cooling blocks for small ICs, LED modules and board-level electronic assemblies.
- Aluminum extrusion and cut-to-length
- Gold anodized surface finish
- Flat base machining or adhesive tape option
Pin Fin Heat Sink Bases
Dense vertical fin geometry for airflow from multiple directions and compact thermal modules.
- Fine fin spacing for high surface area
- CNC drilled mounting holes
- Clear anodizing or natural aluminum finish
Technical Challenges in Aluminum Heat Sink Machining
Heat sinks look simple, but stable thermal performance depends on flat contact surfaces, consistent fin geometry, controlled burrs and correct surface treatment.
Maintaining Fin Accuracy
Thin fins can vibrate, deform or leave burrs during cutting. Toolpath strategy, sharp tooling and fixture support help protect fin height, spacing and edge quality.
Thermal Contact Surface Flatness
The base face must mate tightly with chips, LEDs or power modules. We focus on controlled clamping, finishing passes and inspection of critical mating areas.
Mounting Feature Alignment
Threaded holes, counterbores, slots and cable reliefs are machined after the thermal profile is defined, keeping assembly features consistent with your drawing.
Anodizing and Masking Control
Functional contact faces may need masking, while exposed surfaces need uniform color and corrosion protection. We plan anodize finish requirements before production.
Heat Sink Manufacturing Capability
We support prototype validation, small batch production and repeat orders for custom aluminum thermal parts.
01
Material Selection
6061, 6063 and other aluminum grades can be selected according to thermal conductivity, strength, finish and machining requirements.
02
CNC Secondary Operations
Milling, drilling, tapping, chamfering, counterboring, slotting and engraving convert extruded or raw stock into assembly-ready parts.
03
Surface Finishing
Clear anodizing, black anodizing, colored anodizing, brushing, polishing, bead blasting and chemical conversion coating are available.
04
Quality Inspection
Key dimensions such as base flatness, hole position, thread quality, fin spacing and surface appearance are checked before shipment.
05
Assembly Support
We can prepare screw kits, install threaded inserts, manage protective packaging and keep mating surfaces protected during delivery.
06
Design Feedback
Our team can review drawings for machinability, burr risks, wall thickness, finishing limits and more efficient production methods.
Why Work With HRCCNC for Custom Heat Sinks?
We combine CNC machining knowledge with thermal part production experience, helping customers turn a profile, sketch or complete drawing into reliable aluminum cooling components.
Whether your design needs a compact board-level heat sink, an LED housing with a central cavity, a radial fin part or a machined bracket with cooling fins, we can quote according to your drawing and production plan.
DFM review before production
Prototype to batch supply
Custom packaging for fins
Consistent finish control
Common Applications for Custom Aluminum Heat Sinks
Custom heat sinks are often selected when off-the-shelf profiles cannot meet packaging, thermal, mounting, or appearance requirements. We match fin structure, surface treatment, and fixing methods to your working environment.
Power Electronics & PCB Cooling
Compact pin-fin and extruded aluminum heat sinks help remove heat from MOSFETs, ICs, drivers, control boards, and dense electronic assemblies.
Active Cooling Modules
For higher heat density, aluminum fins can be combined with fans, brackets, and custom screw positions.
LED Lighting Systems
Decorative anodized housings and radial fin structures support stable lumen output and long LED service life.
High-Power Thermal Modules
Aluminum fin stacks can be paired with copper bases or heat pipes for servers, power supplies, converters, and industrial equipment.
Computer & Consumer Electronics
Precision extrusions and CNC details fit CPU coolers, communication devices, embedded systems, and compact consumer products.
Motherboard Chipset Cooling
Low-profile fin arrays help dissipate heat from chipsets, bridge chips, embedded controllers, and high-speed board components in compact layouts.
Need a custom aluminum heat sink for your product?
Send us your drawing, heat source size, target thermal resistance, installation space, surface finish, and estimated quantity. Our team can recommend a suitable extrusion, CNC, die-casting, or heat-pipe assisted solution.
Most Popular CNC Products
In addition to custom aluminum heat sinks, HRCCNC also manufactures other precision CNC aluminum products for electronics, packaging, automotive and industrial applications.
Aluminum Dry Bath Blocks
Custom aluminum dry bath blocks with CNC machined wells, stable heat transfer, anodized finishes, and custom sizes for lab heating equipment.
CNC Snus cans
Custom CNC machined aluminum snus cans with threaded lids, anodized finishes, logo engraving, and tight-fit assembly for premium packaging applications.
CNC shift knobs
Custom CNC machined aluminum shift knobs with precise threads, ergonomic profiles, anodized finishes, and logo engraving for automotive interiors.
Send Your Heat Sink Drawing for a Faster Manufacturing Quote
Upload CAD files, 2D drawings or photos with target dimensions. Tell us the alloy, finish, tolerance, quantity and application so we can recommend a practical process route.