CaseStudy - Grant International
CaseStudy - Grant International
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CaseStudy

U.S. Automation System Manufacturer
— Securing a Korean 5-Axis Machining Partner for High-Precision Manifolds

FAI Accuracy 99.2%, –14% Cost, 5.5-Week Stable Lead Time

  • Client

    U.S. automation system manufacturer

  • Supplier

    Korean 5-axis machining partner

  • Location

    Korea → U.S. Midwest

  • Service Type

    Supplier Discovery & Verification

  • Duration

    9 weeks

  • Outcome

    Verified supplier, 99.2% FAI, 5.5-week lead time

A U.S. automation system manufacturer sought a high-precision Korean machining partner to stabilize cost, lead time, and GD&T interpretation for complex manifolds. GI executed structured supplier discovery, KR/EN technical alignment, and FAI coordination, establishing a production-ready supply chain within 9 weeks.



Challenge

  • • Domestic machining costs had increased 15% in two years
  • • Lead time drift: 6.2 → 8.1 weeks
  • • Tolerance requirements at ±0.01 mm with multi-port alignment
  • • Previous overseas RFQs failed due to GD&T interpretation gaps
  • • Client required 50+ datapoint CMM-based FAI for approval



GI Solution

​GI delivered an end-to-end sourcing and verification process:


  • ① Supplier Discovery & Technical Alignment
 Evaluated 14 Korean CNC shops; shortlisted 4
 Conducted KR/EN clarification on GD&T requirements, surface finish (Ra), tool-path expectations
 Pre-verified machine capability (5-axis travel, probing system, spindle condition)

  • ② FAI Coordination & Validation
 Facilitated sample production within 12 days
 Unified inspection criteria across KR and U.S. teams
 Coordinated CMM-based FAI review including port alignment, burr control, and tool-path consistency
 Ensured rapid revision cycles until dimensional accuracy reached stability

  • ③ Commercial Stabilization
 Negotiated MOQ reduction (300 → 120 pcs)
 Secured a predictable 5.5-week production cycle
 Established a repeatable RFQ → Sampling → FAI → Mass Production workflow



Results

  • • FAI accuracy: 99.2%
  • • Cost reduction: –14%
  • • Lead time: 8.1 → 5.5 weeks
  • • RFQ response time: 48 hours
  • • Dual sourcing strategy established



Client Feedback

— Director of Engineering, U.S. Automation System Builder 

 “GI helped our engineering team secure a Korean 5-axis supplier capable of meeting tight GD&T requirements. Their KR/EN coordination and FAI management saved us weeks of internal effort.”

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