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Stump our GD&T Experts


Jul 15, 2020 09:48 AM

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Erich Zwettler
GD&T Consultant @Sigmetrix
Erich is an expert-level trainer and practitioner of GD&T, having learned and honed his skills in the Automotive and Aerospace industries prior to joining Sigmetrix. His career started with 4 years as a Product Engineer with Dura Automotive Systems, designing manual seat adjuster mechanisms. Then, he spent 12 years with Rolls-Royce Corporation, checking, training, and consulting on GD&T, writing specifications and standards, and helping to clarify drawing interpretation globally. He has been teaching and mentoring designers, manufacturers, and inspectors on GD&T for over 12 years and has developed numerous company-specific standards and specifications on definition interpretation. Erich is a member of many ASME committees, some of which include Y14.5 (Dimensioning and Tolerancing), Y14.46 (Additive Manufacturing), and AED-ALT (Assembly-Level Tolerancing). He is passionate about GD&T and its value and enjoys transferring his knowledge to others.