Ultra-Precision Mold Manufacturing (±0.002mm)
Micron-level tooling manufacturing for micro-pitch electronic connectors, medical devices, optical components, and EV high-voltage modules. Powered by Swiss and Japanese machine tools in a climate-controlled cleanroom toolroom.
Tooling Precision Classification & Decision Tree
Match your product tolerance and mold lifespan requirements against our machining capability tiers:
| Precision Class | Machining Tolerance | Surface Finish (Ra) | Equipment Fleet Employed | Primary Applications |
|---|---|---|---|---|
| Ultra-Precision (Tier 1) | ±0.002 mm | Ra 0.05 µm (Mirror) | Makino V33i, Sodick AG40L Linear EDM, Seibu Wire, Wasino PG | 0.35mm pitch connectors, optical lenses, micro-fluidic chips, flash-free LCP/PEEK |
| High-Precision (Tier 2) | ±0.005 mm | Ra 0.2 µm | DMG MORI 5-Axis CNC, Charmilles EDM, Mitsubishi Wire EDM | Automotive sensors, medical housings, smart wearable enclosures |
| Standard Precision (Tier 3) | ±0.015 mm | Ra 0.8 µm | High-speed 3-axis CNC, standard sinker EDM, surface grinders | Consumer home appliances, power tool clamshells, large structural housings |
🔗 Micro-Pitch Application Guide: Learn how sub-micron tooling eliminates assembly mismatches in our guide on cross-tooling DFM for connector molds, or review sub-0.4mm pitch design in our micro connector mold design guide.
Machine Fleet Whitelist & Machining Capabilities
Our precision toolroom operates Swiss, Japanese, and German mother machines in a 20.0°C ±0.5°C climate-controlled environment:
| Machining Process | Equipment Brand & Model Fleet | Working Axis / Positioning Accuracy | Minimum Machinable Feature Size |
|---|---|---|---|
| High-Speed 5-Axis CNC | Makino V33i / Mikron HSM 500 LP | 30,000 RPM Spindle | ±0.0015 mm | Ø0.20 mm micro end-mills, 0.05 mm corner fillets |
| Mirror Sinker EDM | Sodick AG40L / Makino EDAF3 | Linear Motor Drive | ±0.0010 mm | Ra 0.05 µm mirror finish, 0.10 mm rib slots, zero draft pins |
| Slow-Wire EDM | Seibu M500S / Sodick ALN400G | Sub-micron Optical Scales | ±0.0010 mm | Ø0.05 mm brass wire, 0.0015 mm punch-to-die clearance |
| Optical Profile Grinding (PG) | Wasino DV-1 / Okamoto Ultra-Precision | 50X Optical Projector | ±0.0010 mm | Tungsten carbide punch contour grinding with R0.01 mm |
Review certified tool steels in our mold steel selection guide and verify tool life standards under the SPI mold classification system.
Micro-Tolerance DFM & Closed-Loop Quality Assurance
We achieve sub-micron repeatability through a 4-stage closed-loop manufacturing flow. Learn how CNC, EDM, and wire-cut achieve ±0.002mm mold accuracy inside our climate-controlled toolroom:
Thermal Expansion Equalization
All steel blocks and electrodes soak in the 20.0°C cleanroom for 8+ hours prior to final finishing passes to eliminate thermal drift.
On-Machine Laser Touch Probing
Renishaw laser probes measure cutting tool wear and part datum coordinates in real time before the spark erosion cycle.
Zeiss ACCURA CMM Audit
Ruby probe scanning of every insert corner and shut-off land with 0.9 + L/350 µm volumetric accuracy.
Interchangeable Core Spares
Precision ground locating datums guarantee 100% drop-in interchangeability for all replacement core pins without re-fitting.
Zeiss CMM Inspection Reports & Client Benchmark Case
Real-world verification data from our 0.35mm pitch high-speed board-to-board connector tooling project:
| Critical Parameter | Design Specification | Actual Zeiss CMM Measurement | Process Capability (CPK) |
|---|---|---|---|
| Contact Pin Pitch | 0.350 mm ±0.005 mm | 0.3496 mm – 0.3504 mm | CPK 1.94 (Six Sigma Compliant) |
| Side-Wall Thickness | 0.180 mm ±0.008 mm | 0.1812 mm – 0.1830 mm | CPK 1.81 (High Stability) |
| Parting Line Shut-Off Gap | < 0.004 mm (Zero-flash LCP) | 0.0022 mm | 100% Flash-Free Guarantee |
| Total Housing Planarity | < 0.030 mm (Warpage) | 0.016 mm | CPK 1.72 (Superior Flatness) |
📋 Inspection Protocol: Sourcing precision molds abroad? Use our 8-point mold acceptance checklist during remote or on-site FAT trials.
High-Precision Applications & Industries Served
Where micron-level dimensional precision directly determines product performance and yield:
🔌 Micro-Pitch Connectors & Sockets
0.35mm / 0.50mm pitch B2B, FPC connectors, CPU sockets, and high-frequency 5G RF housings.
🧪 Medical Microfluidics & Drug Delivery
Lab-on-a-chip diagnostic cartridges with 20µm microfluidic channels, inhaler nozzles, and insulin pen gears.
📸 Precision Optical Lenses & Prisms
PMMA / COP optical camera lenses, LiDAR sensor prisms, and LED light guides with Ra <0.01µm optical polish.
🚗 Automotive Radar & Sensor Housings
ADAS radar radomes, pressure sensor bodies, and high-voltage EV battery management system (BMS) headers.
Related Engineering Guides & Technical Resources
How CNC, EDM and Wire-Cut Achieve ±0.002mm Mold Accuracy
Makino V33i high-speed milling, Sodick AG40L mirror EDM, and Seibu M500S wire EDM inside 20°C cleanrooms.
How Conformal Cooling Cuts Injection Mold Cycle Times by 30-50%
3D printed LPBF 1.2709 steel inserts, uniform heat dissipation, cycle time reduction, and warpage control.
How to Design Micro Connector Molds for Sub-0.4mm Pitch Applications
0.08mm blade core pins, WF30 carbide tooling, LCP shear thinning, and sub-0.004mm flash threshold control.
Frequently Asked Questions
What tolerances can you hold in a precision injection mold?+
Do you provide CMM measurement reports with every mold?+
When should I choose a SPI Class 101 mold over Class 102?+
How do you verify micro-tolerance during T1 trials?+
Request a Precision Tooling DFM & Quote
Upload your 3D CAD files for a sub-micron machinability audit, tolerance stack-up review, and factory quote within 24 hours.