Customer Profile
This dfm review manufacturing case study shows Industry: Industrial equipment manufacturer | Location: Stuttgart, Germany | Order: 12-part assembly, aluminum 7075-T6 + stainless 316L
The Challenge
The product team had a 12-part assembly designed in SolidWorks. Tight fit tolerances between mating components. Previous supplier produced parts that “looked right” but failed assembly — root cause was an incorrect fillet radius creating interference. This dfm review manufacturing case study demonstrates how QDJ delivers results when others can’t.
How QDJ Helped
- DFM Review: 6 technical questions before quoting — identified radius issue on part #7, thread engagement concern on part #3, and anodizing thickness tolerance on part #9
- Assembly Simulation: Reviewed CAD assembly constraints to verify all 12 parts would mate correctly
- Material Certification: Provided mill certificates for 7075-T6 and 316L with traceable heat numbers
- First Article Inspection: Full dimensional report with CMM data for all critical features
Results
| Metric | Before QDJ | With QDJ |
|---|---|---|
| Assembly failure rate | 40% | 0% |
| Design issues caught before machining | 0 | 3 issues saved |
| Rework cost avoided | — | $12,000 |
| Lead time (first order) | 18 days | 8 days |
Client Verdict
“The DFM review changed how we evaluate suppliers. We no longer ask ‘how much?’ first — we ask ‘what questions do you have about our design?’ QDJ set the standard.”
Verified References: ISO 9001:2015 Standard | ASME Manufacturing Standards
Related Services:
- CNC Machining Service — 5-axis, ±0.005mm, aluminum/stainless/engineering plastics
- 3D Printing Service — SLA, SLS, MJF for rapid prototypes in 2-5 days
- Injection Molding Service — Low-volume, prototype tooling, production-ready
- Contact QDJ — Upload your drawing for a same-day quote
Key Takeaways for DFM Review in Manufacturing
A thorough DFM review manufacturing process catches design issues before they become expensive problems. QDJ’s DFM review caught 3 critical issues — an incorrect fillet radius, insufficient thread engagement, and anodizing thickness tolerance — saving the customer $12,000 in mold rework. This is the difference between a supplier who quotes without questions and a DFM review manufacturing partner who reads your CAD like an engineer.
When evaluating suppliers for your next project, ask one question: “What questions do you have about my design?” If they have none, run. A proper DFM review manufacturing process starts with questions, ends with parts that assemble correctly the first time.