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#121

In this episode of Stay Sharp in Digital Engineering, hosts Juliann Grant and Jonathan Scott continue the digital product series with a deep dive into mechanical variation management and tolerance analysis. Joined by James Stoddard, co-founder and research fellow at Sigmetrix, the conversation explores how tolerance analysis acts as a critical bridge between ideal CAD models and real-world manufactured parts. The discussion unpacks why variation can never be eliminated, how poor tolerance decisions quietly drive cost and quality issues, and why managing variation across the entire product lifecycle is essential for modern, model-based enterprises. Key Takeaways • Why tolerance analysis is more than a final design check-it's a lifecycle discipline • How variation breaks the digital thread between design and manufacturing • The tradeoff between tighter tolerances, higher quality, and rising cost • Why GD&T is a language—and how misunderstanding it drives manufacturing risk • How tolerance analysis supports better decisions in design, manufacturing, and inspection • The role of tolerance analysis in the transition from virtual models to real-world production Guest: James Stoddard (  / james-stoddard-b5140b13  ) Co-Founder & Research Fellow, Sigmetrix James has spent over 25 years advancing tolerance analysis and mechanical variation management technologies, helping organizations improve quality while controlling cost. Resources Mentioned ●      Mechanical Variation Management ●      Tolerance Analysis ●      Model-Based Definition (MBD) ●      Geometric Dimensioning & Tolerancing (GD&T) ●      Digital Thread & Model-Based Enterprise (MBE)   If you found this episode valuable, subscribe to Stay Sharp in Digital Engineering, leave a review, and share this episode with a colleague working in design, manufacturing, or quality. Music is considered “royalty-free” and discovered on Story Blocks. Technical Podcast Support by Jon Keur at Wayfare Recording Co. (https://www.wayfarerecording.com/) © 2024 Razorleaf Corp. All Rights Reserved.