Precision CNC Machining for RF, mmWave & High-Performance Components
- Tolerance to ±0.005mm — verified by Zeiss CMM
- 3 / 4 / 5-Axis CNC — complex geometries, fewer setups
- 50+ engineering alloys — Aluminum, Stainless, Titanium, Brass, Plastics
- DFM feedback within 24 hours — free engineering review on every RFQ
mm Tolerance
Surface Finish
Machining
What We Solve
Four critical machining problems that cost RF and precision engineers time and money — and how we eliminate them.
Poor Surface Finish Degrades RF Performance
Standard machining leaves rough cavity walls that increase insertion loss at microwave frequencies. Surface roughness above Ra 1.6 can cause 2–3 dB additional loss.
Ra 0.4 surface finish on waveguide cavities. Post-machining polishing and profilometer verification on every critical surface.
Tolerance Drift Kills Yield in Multi-Cavity Assemblies
Dimensional variation across production batches causes misalignment in stacked waveguide assemblies, shifting operating frequency.
±0.005mm process capability with Zeiss CMM verification. SPC data tracked per batch. First article inspection report standard on every order.
Material Selection Uncertainty Delays Projects
Engineers waste weeks sourcing suppliers who can actually machine 7075-T6, Titanium Grade 5, or Ultem PEI to specification.
50+ grades in stock or rapid-sourced. Mill test certificates provided. Our DFM engineer recommends optimal material alternatives before you commit.
Lead Times Are Unpredictable
General machine shops quote 4 weeks, deliver in 8. Your NPI schedule cannot afford that uncertainty.
Prototypes in 5–7 business days. Production parts with firm delivery dates. Real-time status updates. No surprises.
Precision Machining Solutions
End-to-end CNC capability under one roof. From raw material to finished, inspected part.
5-Axis CNC Milling
Complex geometries, deep cavities, angled features — machined in a single setup for superior alignment accuracy.
- Material: Al 6061/7075, SUS 304/316, Ti Gr5, Brass
- Finish: Anodizing, Passivation, Chem Film, Powder Coat
- Tolerance: ±0.005mm
- Application: Waveguides, Antenna arrays, RF enclosures
CNC Turning & Turn-Mill
Precision turned components with live-tooling capability for milled features in a single cycle.
- Material: SUS 303/304/316, Brass C360, Al 6061, PEEK
- Finish: Electropolishing, Nickel Plating, Passivation
- Tolerance: ±0.003mm
- Application: RF connectors, Coupling nuts, Precision spacers
Swiss-Type Machining
Ultra-precision small-diameter parts. Bar-fed automation for high-volume consistency.
- Material: SUS, Brass, Titanium, Engineering Plastics
- Finish: Passivation, Gold Plating, Anodize
- Tolerance: ±0.003mm
- Application: SMA connectors, Contact pins, Micro bushings
Wire & Sinker EDM
Burr-free machining for intricate internal features, sharp corners, and hardened materials.
- Material: Tool Steel, Carbide, Hardened Stainless
- Finish: As-machined Ra 0.2, optional polishing
- Tolerance: ±0.002mm
- Application: Waveguide slots, Mold cavities, Precision apertures
Surface Grinding
Sub-micron flatness and parallelism for sealing surfaces, mounting bases, and optical interfaces.
- Material: Hardened Steel, Carbide, Ceramic
- Finish: Ra 0.1 ground finish
- Tolerance: ±0.002mm flatness
- Application: Mounting plates, Sealing faces, Gauge blocks
Assembly & Finishing
Post-machining services: cleaning, assembly, functional testing, and packaging to your specification.
- Material: All metals & assemblies
- Finish: Conductive anodize, Silk screening, Laser marking
- Inspection: Functional test per print
- Application: Kitted assemblies, Labeled enclosures, Packaged parts
Where Our Parts Go
Precision components trusted in mission-critical applications across five core industries.
Communication Equipment
RF filters, base station housings, waveguide components
mmWave Radar
Antenna arrays, radomes, sensor housings, calibration fixtures
UAV & Aerospace
Lightweight structural brackets, avionics enclosures, thermal components
Industrial Automation
Robot end-effectors, sensor mounts, pneumatic manifolds
Semiconductor Equipment
Wafer handling components, vacuum chamber parts, precision fixtures
Engineering Detail
Four progressive machining challenges and how our manufacturing process solves them at each stage.
Material Selection & Machinability
Challenge: RF applications demand specific alloys (Al 6061-T6 for conductivity, 7075 for strength, INVAR for thermal stability). Each machines differently. Wrong tooling = scrapped parts.
Our Approach: We maintain optimized cutting parameters for every alloy in our library. Material arrives with mill test certs. Our CAM engineer selects toolpath strategy based on your material call-out, not a generic template. For exotic materials (Titanium, INVAR, Ultem), we provide written DFM feedback before cutting begins.
Deep Cavity Machining & Chip Evacuation
Challenge: Waveguide cavities with depth-to-diameter ratios exceeding 5:1 risk chip packing, tool deflection, and poor surface finish at the cavity floor.
Our Approach: Through-tool coolant on 5-axis centers. Peck drilling cycles for deep holes. Progressive tooling strategy: rough with chip-breaking geometry, semi-finish with reduced step-over, finish with dedicated cavity tools at conservative feeds. Cavity floor Ra verified before unclamping.
Multi-Setup Alignment & Datum Control
Challenge: Complex components require multiple setups. Each re-fixture introduces stacking tolerance errors. A 0.02mm misalignment across setups can shift mounting hole patterns out of spec.
Our Approach: 5-axis single-setup machining eliminates re-fixturing for complex parts. When multiple setups are unavoidable, we machine reference datums in the first operation and probe-align every subsequent setup. CMM verification on critical features after each operation. Documented setup sheet accompanies every job.
Surface Finish & Post-Processing for RF Performance
Challenge: Conductive anodizing adds 5–15μm to surfaces. Masking must be precise to maintain conductivity on grounding pads. Surface roughness directly impacts insertion loss at mmWave frequencies.
Our Approach: We account for plating thickness in CAM. Masking is verified against your drawing before anodizing. Post-finish dimensional inspection on all plated features. Profilometer verification for Ra on critical RF surfaces. Conductive anodize qualified to MIL-A-8625 Type II and Type III.
Capabilities — Process-Level Data
Process capability data engineers can quote against. All tolerances reference ISO 2768 unless tighter limits are required by drawing.
5-Axis CNC Milling
- Tolerance: ±0.005mm
- Max Part: 600×500×400mm
- Min Feature: 0.3mm
- Surface Ra: 0.4μm
CNC Turning & Turn-Mill
- Tolerance: ±0.003mm
- Max Part: Ø350×800mm
- Min Feature: Ø1mm
- Surface Ra: 0.4μm
Wire EDM
- Tolerance: ±0.002mm
- Max Part: 400×300×220mm
- Min Slit: 0.1mm
- Surface Ra: 0.2μm
Surface Grinding
- Tolerance: ±0.002mm
- Max Part: 600×300mm
- Flatness: 0.002mm
- Surface Ra: 0.1μm
Material × Process Compatibility
| Material | 5-Axis Milling | Turning | EDM | Grinding |
|---|---|---|---|---|
| Aluminum 6061/7075 | ✓ | ✓ | — | ✓ |
| Stainless 304/316 | ✓ | ✓ | ✓ | ✓ |
| Titanium Grade 5 | ✓ | ✓ | — | ✓ |
| Brass C360 | ✓ | ✓ | ✓ | — |
| PEEK / Ultem / Delrin | ✓ | ✓ | — | — |
| INVAR / Kovar | ✓ | ✓ | ✓ | ✓ |
Quality Control — Inspected Before It Ships
Four-stage inspection gate ensures every part meets specification before it leaves our floor.
Incoming Material Inspection
Mill test certificate verification. Material grade confirmed against PO. Hardness test for critical alloys. Spectrometer verification for stainless and titanium grades.
In-Process Inspection
Critical dimensions checked at each setup change. Tool wear monitoring with automatic offset compensation. Surface roughness spot-check on cavity floors.
First Article Inspection (FAI)
Full dimensional verification per AS9102. Zeiss CMM with MPE 1.9μm. Profilometer Ra verification. Full report included with shipment.
Final Audit & Shipment
100% visual inspection for surface defects. Sampling plan per AQL 1.0 C=0 for production lots. Certificate of Conformance issued. Packaging to your spec.
Why Engineers Choose MGZZ CNC
Engineering-First, Not Sales-First
Every RFQ is reviewed by a manufacturing engineer before quoting. You receive written DFM feedback — not just a price. We flag tolerance risk, suggest material alternatives, and propose cost-down ideas before you commit.
Documentation That Ships With Your Parts
FAI reports (AS9102 format), material certs, CMM data, Certificate of Conformance. Documentation is part of the part — not an afterthought.
RF & mmWave Domain Knowledge
We understand that surface roughness affects insertion loss, dimensional error shifts frequency, and assembly gaps cause leakage. We machine with RF performance in mind — not just geometry.
Ready to Start Your Project?
Upload your CAD file. Get DFM feedback and a quote within 24 hours.
Accepted formats: STEP, STP, IGES, X_T, SLDPRT, PDF.
Frequently Asked Engineering Questions
What tolerance can MGZZ CNC achieve?
±0.005mm standard on 5-axis milling. ±0.003mm for turning and Swiss machining. ±0.002mm for EDM and grinding. Tolerances are verified by Zeiss CMM with MPE 1.9μm.
What materials do you machine?
Aluminum (6061-T6, 7075-T6, 5083, 6082), Stainless Steel (303, 304, 316, 17-4PH), Titanium (Grade 5), Brass (C360), Copper (C110), PEEK, Ultem PEI, Delrin, PTFE, INVAR, Kovar. 50+ grades total.
Do you provide material certifications?
Yes. Mill test certificates (MTC) are provided on request at no additional cost. Standard for aerospace and RF programs. Full material traceability maintained per lot.
What surface finishes do you offer?
Anodizing (Type II & III, clear/black/custom colors), Conductive anodize (MIL-A-8625), Hard anodize, Electropolishing, Passivation, Nickel/Chrome/Gold plating, Chem Film (Alodine), Powder coating, Bead blast, Laser marking.
How does surface roughness affect RF performance?
Surface roughness increases conductor loss at microwave frequencies. At mmWave frequencies (30–300 GHz), skin depth is extremely shallow (<0.5μm), making surface finish critical. We achieve Ra 0.4 standard, Ra 0.2 on request for waveguide cavities.
Can you machine thin-wall waveguide structures?
Yes. Wall thickness down to 0.3mm for aluminum, 0.5mm for stainless steel. We use progressive tooling strategies and low-stress clamping to minimize deformation. DFM review will flag any high-risk features before machining.
Do you handle prototype quantities?
Absolutely. 1–10 pieces for prototype and NPI programs. No minimum order quantity. Rapid prototyping with 5–7 business day turnaround.
What CAD formats do you accept?
STEP (.stp / .step), IGES (.igs), Parasolid (.x_t), SolidWorks (.sldprt), and PDF drawings. 3D CAD is preferred for DFM review and automated toolpath generation.
What is your typical lead time?
Prototypes: 5–7 business days. Small batch (10–500 pcs): 2–3 weeks. Production (500+ pcs): 3–5 weeks with firm delivery schedule. Rush service available on request.
How do you ensure dimensional accuracy across production batches?
SPC data tracked per batch. CMM verification on key dimensions. In-process inspection at each setup change. Full FAI report with first shipment. Sampling plan per AQL 1.0 C=0 for ongoing production.
Do you offer conductive anodizing for RF enclosures?
Yes. Conductive anodize per MIL-A-8625 Type II and Type III. We precisely mask grounding pads and connector interfaces. Post-finish continuity testing available on request.
What inspection equipment do you use?
Zeiss CONTURA CMM (MPE 1.9μm), Mitutoyo profilometer (Ra 0.01μm resolution), digital height gauges, bore gauges, thread gauges, hardness tester, and optical comparator. All equipment calibrated to NIST-traceable standards.
Are you ISO certified?
Yes — ISO 9001:2015 certified. Quality management system audited annually. Full documentation package available for customer audits.
Can you handle medium-volume production?
Yes. Annual capacity for 50,000+ piece programs. Multi-machine cells with automated bar feeders for turning. Dedicated workholding for repeat production runs.
Do you ship internationally?
Yes. We ship globally via DHL, FedEx, UPS, and TNT. Standard shipping: 5–7 days. Express: 2–3 days. FCA / FOB terms available. All shipments include commercial invoice and packing list.
What is your payment structure?
New customers: 50% deposit, 50% before shipment. Net 30 terms available after 3 completed orders. Wire transfer (T/T) and PayPal accepted.
How do you handle design changes mid-production?
Engineering change orders (ECO) are reviewed by our DFM engineer within 24 hours. Revised quote provided before implementation. In-process parts can often be adapted with minimal schedule impact.
Do you sign NDAs?
Yes. We routinely sign mutual NDAs for customer projects. All drawings, CAD files, and technical specifications are treated as confidential and stored on access-controlled servers.
What is your scrap and rework policy?
Parts that fail inspection are scrapped and remanufactured at our cost. Rework is performed only with customer approval. Scrap rate data is tracked and provided on request for production programs.
How do I get started?
Upload your CAD file and drawing via the form below, or email info@mgzzcnc.com. Our engineering team responds with DFM feedback and a quotation within 24 hours. No obligation.
Upload Your Drawing — Get a Quote in 24 Hours
Drop your CAD file. Our engineer reviews it, not a sales rep. You get DFM feedback and pricing within one business day.
Send Your Drawing
Accepted: STEP, STP, IGES, X_T, SLDPRT, PDF, ZIP. Max 20MB.
Prefer to Chat?
Talk directly to Alice, our project engineer. She answers technical questions and can give you a rough estimate on the spot.
Email: info@mgzzcnc.com
Phone: +86 199-2432-2668