Get Inquiry NowFrom EMI-shielded enclosures to custom heat sinks — we deliver high-precision electronic components with tolerances of ±0.01mm, backed by ISO 9001 & ISO 13485 dual certification and electroplating-to-anodizing finishing in-house.
Quick Answer: Great Light provides custom CNC machining for the electronics industry, including precision enclosures, custom heat sinks, connectors, mechanical assemblies, PCB test fixtures, and control panels. We machine aluminum, copper, brass, stainless steel, and engineering plastics with tolerances to ±0.01mm. ISO 9001 & 13485 certified, with in-house electroplating, anodizing, and passivation. Electronics prototypes delivered in 3–7 business days.
Industry Perspective
Electronics components aren’t just structural — they affect signal integrity, thermal performance, EMI compliance, and product longevity. Here’s what sets a qualified electronics CNC partner apart.
Consider what an electronics engineer actually needs from a CNC supplier: an enclosure that holds dimensional tolerances to ensure PCB seating, a heat sink with fin geometry precise enough to meet thermal simulation predictions, and a connector body with bore concentricity tight enough to guarantee IP67 sealing. These aren’t aspirational specs — they’re the baseline for a product that ships without engineering change orders.
At Great Light, we’ve been machining precision electronics components since 2005, working with consumer electronics brands, industrial control system manufacturers, and semiconductor equipment suppliers across North America, Europe, and Asia. Our engineering team understands that electronics machining isn’t just about hitting a tolerance — it’s about delivering a part that performs consistently in production, doesn’t introduce RF noise through surface irregularities, and carries the traceability documentation your compliance team needs.
“Does your current CNC supplier understand the difference between a cosmetic surface finish and an EMI-critical one? Can they deliver 300 aluminum enclosures with anodized Type III finish and ±0.01mm bore tolerance in under two weeks? We can — and our engineering team will flag DFM issues in your files before we quote.”
20+
Years electronics machining
50+
In-house surface finishes
200+
Advanced machines
3
Day express lead time
Manufacturing Capabilities
Precision machining and in-house finishing for the full spectrum of electronics manufacturing applications.
RF ShieldingIP-RatedEMI Gaskets
Aluminium 6061 and magnesium alloy AZ31B enclosures are milled to tight flatness specs for EMI gasket seating (≤0.05 mm). Threaded insert pockets, PCB standoffs, and connector cutouts are held to ±0.05 mm positional tolerance — essential for blind-mate connectors and IP67 sealing surfaces.
FLATNESS
≤0.05 mm
MATERIALS
Al 6061, Mg AZ31B
LEAD TIME
From 3 days
SURFACE
Anodise / Alodine
Fin ArraysVapour ChambersMicrochannel
Skived and CNC-milled fin-array heatsinks in Al 6063-T5 achieve fin pitches down to 1.0 mm with fin heights up to 40 mm — maximising surface area per gram for GPU, FPGA, and power-module cooling. Liquid cold plates feature friction-stir-welded or brazed microchannel cores with Ra ≤ 0.8 μm contact faces.
MIN FIN PITCH
1.0 mm
MATERIALS
Al 6063, Cu, Al-SiC
POST-PROCESS
Anodise / Nickel plate
Wafer ChucksSMT FramesTest Fixtures
Vacuum wafer chucks, SMT stencil frames, and ICT test fixtures in hard-coat anodised aluminium and PEEK are among the most dimensionally stable parts we produce. Flatness across a 300 mm vacuum chuck is held to ≤0.01 mm — critical for uniform wafer contact and repeatable probe registration during electrical test.
CHUCK FLATNESS
≤0.01 mm
LEAD TIME
From 5 days
MATERIALS
Al, PEEK, Ceramic
FINISH
Hard-coat / ELess Ni
RF ConnectorsHigh-DensityGold Plated
Turned brass, phosphor bronze, and BeCu connector contacts require sub-micron surface finish and concentricity within 0.005 mm for reliable mating cycles. Our Swiss-type CNC turning centres handle bar stock down to Ø1.5 mm, producing precision contacts, SMA/SMP RF connectors, and high-density board-to-board housings in batch quantities from 50 to 50,000 pieces.
CONCENTRICITY
≤0.005 mm
MATERIAL
Brass, BeCu, PEEK
MIN. DIA.
Ø1.5 mm
PLATING
Gold, Silver, Tin
Lens BarrelsSensor MountsLiDAR
Lens barrel bores and sensor-mount datums must be concentric and square to sub-micron levels for image quality. We machine Al 6061 and titanium optical housings with internal bore tolerances to H5 class (±0.005 mm on Ø30 mm), black hard-coat anodised to eliminate internal reflections — used in machine-vision cameras, LiDAR receivers, and industrial inspection optics.
BORE CLASS
H5 / ±0.005 mm
MATERIAL
Al 6061, Ti, Invar
FINISH
Black hard-coat
LEAD TIME
From 5 Days
AlodineELess NiGold Flash
Electronics enclosures are specification-driven for conductivity, solderability, and ESD protection — not appearance. We apply Alodine (MIL-DTL-5541 Class 1A) for EMI-bonded chassis, electroless nickel (EN) for uniform coverage on complex geometries, and selective gold flash for contact surfaces requiring low contact resistance over 10,000+ mating cycles.
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Components We Produce
From semiconductor equipment frames to wearable device enclosures — our machining covers the full spectrum of electronics hardware applications.
RF cavities, waveguide components, antenna mounts, filter housings with critical dimensional stability
Server chassis, GPU brackets, cooling blocks, SSD enclosures, rack hardware
Inverter housings, bus bar structures, capacitor brackets, power module cooling plates
Robot joint housings, servo motor brackets, PLC enclosures, sensor mounting fixtures
Laptop frames, speaker grilles, smartwatch cases, drone frames, IoT device housings
Oscilloscope panels, signal generator housings, probe fixtures, calibration jigs
Working on a complex electronics assembly with multiple precision components? Contact our engineering team for a comprehensive DFM review and consolidated manufacturing quote across all components.
Material Capabilities
Material selection directly impacts your product’s EMI performance, thermal management, and regulatory compliance. Our team advises on the optimal material before every order.
| Material | Grade | Electronics Properties | Typical Applications | Key Finish |
|---|---|---|---|---|
| Aluminum 6061 | T6 | Lightweight, excellent thermal conductivity, easy to anodize | Enclosures, heat sinks, front panels, rack hardware | Type II / Type III Anodize |
| Aluminum 6063 | T5 | Superior surface finish, ideal for extrusion-based heat sinks | Heat sink fins, LED profiles, structural frames | Clear / Black Anodize |
| Copper (ETP) | C101, C110 | Highest electrical and thermal conductivity | Bus bars, heat spreaders, RF shielding cans, grounding straps | Nickel / Tin Plating |
| Brass | C360 | Excellent machinability, good conductivity, RoHS-compliant options | Connector bodies, standoffs, threaded inserts, terminals | Gold / Nickel Plating |
| Stainless Steel | 304, 316L | Corrosion resistant, non-magnetic options, durable | Enclosures for harsh environments, EMI gasket frames | Passivation / Electropolish |
| Delrin (POM) | Natural / Black | Electrically insulating, low friction, dimensionally stable | PCB fixture plates, spacers, dial components, bearing housings | Machined finish |
| PEEK | Unfilled / GF30 | High-performance insulator, chemical resistant, stable to 250°C | High-temperature connector housings, semiconductor process components | Machined / Polished |
Need material certification for compliance? We provide full material traceability documentation on request. Request a material consultation →
Surface Treatment
Surface finish isn’t cosmetic in electronics — it directly affects EMI performance, corrosion resistance, and electrical contact reliability. We offer 50+ finishes in-house.
✓ Type II Anodizing — corrosion resistance, electrical isolation for aluminum enclosures and panels
✓ Type III Hard Anodizing — wear resistance for sliding components and heat sink surfaces
✓ Electroless Nickel Plating — uniform coating for complex geometries, corrosion and wear resistance
✓ Gold Plating — contact reliability for connector pins and electrical contacts requiring low contact resistance
✓ Chemical Film (Alodine) — maintains electrical conductivity while adding corrosion protection to aluminum
✓ Passivation — removes free iron from stainless steel surfaces, maximizing corrosion resistance
| Application | Recommended Finish |
|---|---|
| EMI shielded enclosure | Chemical Film + Conductive Anodize |
| Connector contact pins | Nickel + Flash Gold |
| Aluminum heat sink | Black Anodize Type II |
| Industrial control panel | Powder Coat / Anodize |
| Stainless enclosure | Passivation + Electropolish |
| High-temp polymer parts | Machined finish / as-milled |
Real Client Project
📋 Case Study — Industrial IoT Enclosure Production
Client: Industrial IoT hardware company developing a rugged environmental monitoring device for outdoor deployment in harsh conditions.
Challenge: The aluminum enclosure required IP67 seal integrity via a precisely machined O-ring groove (±0.02mm width, ±0.01mm depth), through-holes for 6 cable glands at exact positions, and Type III hard anodizing for UV and corrosion resistance. Previous supplier had 12% seal failure rate on first production run.
Great Light Solution: Our DFM review identified the root cause of the seal failures — the O-ring groove surface finish was Ra 3.2 vs. the Ra 1.6 required. We machined to Ra 0.8 on groove surfaces, achieved ±0.01mm depth consistency across all 300 units, and delivered with zero seal failures on client pressure testing. Full Type III anodizing completed in-house within 2 days of machining.
Want to discuss a similar electronics enclosure project? Get a free engineering consultation →
How It Works
Designed for electronics engineers and hardware procurement teams who need precision, speed, and proper documentation.
STEP, IGES, or STL + 2D drawing. Encrypted NDA-protected portal.
Free DFM review + competitive quote returned within 2 hours.
Approve quote and production is scheduled immediately.
CNC machining + in-house surface treatment. CMM inspection included.
DHL/FedEx/UPS with CMM reports, certs, real-time tracking.
Quality & Compliance
Full QMS from order intake to delivery. Process control records, non-conformance management, and corrective action documentation.
Active automotive-aerospace quality system. Control plans, FMEA records, and MSA studies available for supplier qualification audits.
Medical device manufacturing standard — the same traceability and documentation discipline applied to all aviation work.
First Article Inspection reports, material certs, and lot traceability documentation structured to AS9100 Rev D requirements.
Client Testimonials
Frequently Asked Questions
Common questions from electronics hardware engineers and procurement teams before their first Great Light order.
Great Light provides electronic enclosure machining, custom heat sink fabrication, precision connector manufacturing, PCB test fixture machining, control panel machining, and electronics rapid prototyping. We use 5-axis CNC milling, CNC turning, EDM, and wire EDM with tolerances to ±0.01mm on aluminum, copper, brass, stainless steel, and engineering plastics including PEEK and Delrin.
Yes — heat sink fabrication is a core capability. We produce custom aluminum heat sinks with fin pitches as tight as 1mm, base flatness within 0.02mm, and surface finish Ra 0.8 on the base contact area for maximum thermal transfer. We handle both passive heat sinks (natural convection) and active cooling structures with fan mounting features. Black anodize Type II is our standard finish for optimized thermal emissivity.
We offer 50+ in-house surface finishes for electronics applications: Type II and Type III anodizing for aluminum enclosures and panels, electroless nickel plating for uniform coverage on complex geometries, gold plating for connector contacts requiring low contact resistance, chemical film (Alodine) for electrically conductive aluminum surfaces, and passivation and electropolishing for stainless steel. We advise on the optimal finish for your specific EMI, thermal, and compliance requirements.
Our electronics material capabilities include: aluminum alloys (6061-T6, 6063-T5 for heat sinks) for enclosures and thermal management; copper (C101, C110) and brass (C360) for connectors and EMI shielding; stainless steel (304, 316L) for harsh environment enclosures; and engineering plastics including PEEK, Delrin, and polycarbonate for insulating components and test fixtures. All materials are fully traceable.
Electronics prototypes and small batches ship within 3–7 business days. Complex multi-axis parts or orders requiring multiple surface finish steps typically deliver in 7–12 business days. Production runs of 100–1,000 units are fulfilled within 10–15 business days. DHL/FedEx/UPS delivery from Dongguan reaches North America and Europe in 3–5 additional days. Express production scheduling is available for time-critical programs.
We ensure IP67 sealing integrity on machined aluminum enclosures through a combination of precision CNC machining, engineered sealing design, controlled surface finishing, and rigorous leak-testing procedures.
Upload your CAD files and receive a DFM-reviewed quote within 2 hours — with ISO 13485 documentation built into every order. No commitment required.