Custom CNC Machined Heat Sinks — Milling, Drilling, Sawing & Engraving
BY Thermal provides complete CNC machining for custom aluminum and copper heat sinks and thermal parts — milling, sawing, drilling, tapping, engraving and more — combined with skiving, extrusion and other forming processes, all based on customer drawings.
Heat Sink CNC Machining Capabilities
From raw profile to assembly-ready part, our CNC workshop handles every machining operation on your heat sink — no matter the material or geometry.
CNC Milling
Flat surfaces, slots, pockets, stepped bases and 3D contours on aluminum, copper and more — the core of custom heat sink machining.
Sawing / Cutting
Cut extruded profiles, plates and bars to length with clean, square ends — ready for further machining or direct assembly.
Drilling & Tapping
Through holes, blind holes, threaded holes and mounting holes with automated depth and diameter control for assembly-ready parts.
Engraving & Marking
CNC engraving of logos, part numbers, serial numbers and specifications on heat sinks for traceability and brand identity.
Chamfering & Rounding
Clean chamfers, rounded corners and edge breaking on every part — safe to handle, ready for coating and mounting.
Reaming & Counterboring
Fine hole finishing, counterbores and countersinks for screws and hardware — precise fit for every mounting point.
Slotting & Grooving
Channels and grooves for heat pipe embedding, thermal pads, wire routing and airflow optimization.
Deburring & Finishing
Edge deburring, surface finishing and cleanup so every heat sink is safe to handle and ready for coating or assembly.
CNC Machining Combined with Forming Processes
Forming processes create the basic shape; CNC machining finishes the detailed features. Together they deliver the best balance of cost, speed and quality — all under one roof at BY Thermal.
CNC + Skiving
One-piece skived fins with a fully machined base plate, top plate, mounting holes and complex features that skiving alone cannot produce.
CNC + Aluminum Extrusion
Finish-machined extruded profiles — cut to length, drilled, tapped and machined with stepped bases and mounting features. See extruded heat sinks.
CNC + Heat Pipe Integration
Machine grooves and slots to embed copper heat pipes into the base, then solder and assemble into a complete high-power thermal unit.
CNC + Stamping
Secondary trimming, hole finishing and edge machining on stamped heat sink parts and sheet-metal fin assemblies.
CNC + Sheet Metal / Bending
Machined plates, brackets and enclosures with precise bend lines, hardware holes and clean, stress-free edges.
CNC + Surface Treatment
Post-machining anodizing, passivation, nickel plating and powder coating with masked or re-machined mating surfaces.
Applications of CNC Machined Heat Sinks
Power Electronics & IGBT
CNC-machined bases and mounting interfaces for high-power modules.
LED Lighting
Drilled, tapped and engraved housings with tight thermal contact.
Telecom & 5G
Machined aluminum heat sinks for base stations and RF equipment.
Industrial Automation
Servo drives, PLC and motor controllers with custom mounting.
EV & Energy Storage
Controllers and inverter heat sinks machined for high vibration.
Medical Equipment
CNC-machined thermal parts for lasers and diagnostic instruments.
Aerospace
Lightweight, high-strength machined heat sink components.
Data Center & AI
Machined server and GPU thermal components with reliable quality.
CNC Heat Sink Machining Capabilities & Specifications
| Parameter | BY Thermal Capability | Notes |
|---|---|---|
| Materials | Aluminum 6061 / 6063, pure copper, brass, stainless steel | Selected by thermal & structural needs |
| CNC operations | Milling, sawing, drilling, tapping, reaming, slotting, engraving, chamfering | 3-axis & 4-axis CNC |
| Tolerances & dimensions | Per customer drawing | Confirmed in engineering review |
| Secondary features | Threaded holes, counterbores, stepped bases, pockets, logo engraving | Assembly-ready parts |
| Integrated processes | Skiving, aluminum extrusion, stamping, heat pipe embedding, sheet metal | One-stop manufacturing |
| Surface treatment | Anodizing, passivation, nickel plating, powder coating | Post-machining options |
| Prototype lead time | 15–25 days | From drawing approval |
| MOQ | Flexible — prototype to volume | Generally no set MOQ |
* Part size range, lead times and MOQ are confirmed during engineering review of your drawing.
Featured CNC Machined Heat Sinks & Thermal Parts
Why Buy CNC Machined Heat Sinks from BY Thermal
In-House CNC Workshop
Milling, sawing, drilling and engraving performed internally for tight control over quality and lead time.
Machining + Forming in One Place
Combine CNC with skiving, extrusion, stamping and heat pipe assembly — single source, consistent quality.
Fast, Reliable Prototypes
Typical prototype lead time of 15–25 days so you can validate design and fit before volume production.
Engineering & DFM Support
Free manufacturability review and thermal design support before you commit to tooling or machining.
OEM / ODM Flexibility
Built to your drawings with your brand — including engraved logos and serial numbers, export packaging and documentation.
Quality You Can Trust
ISO 9001:2015 quality system, in-house CMM inspection and RoHS-compliant materials across every order.
From Drawing to CNC Machined Heat Sink
Drawing & DFM Review
CNC Programming
Milling / Sawing / Drilling
Drilling · Tapping · Engraving
Finishing & Inspection
Frequently Asked Questions
Q1: Can you CNC machine heat sinks from my drawings?
Q2: What CNC operations do you offer for heat sinks?
Q3: Can you combine CNC machining with skiving or extrusion?
Q4: Can you engrave logos or part numbers on heat sinks?
Q5: What tolerance can you hold?
Q6: What is your lead time and MOQ for CNC machined heat sinks?
Get a Quote for Your CNC Machined Heat Sink
Send your drawing and requirements — our engineers will review manufacturability, recommend the right combination of CNC operations and forming processes, and come back with a cost-optimized quotation.
Request a Quote View CNC Machined Parts