Advantage GD&T | Doug Keller

Author Archives: Doug Keller

Doug Keller is Owner, Consultant and Instructor at Advantage GD&T Training and Consulting, and is certified by the American Society of Mechanical Engineers as a Senior Level Geometric Dimensioning and Tolerancing Professional.

GD&T: Working Through the Misconceptions

By Doug Keller | Published March 5, 2014

This article is a continuation of my previous post, “Variation in Production and Why GD&T is Superior to Coordinate Tolerancing”.   Geometric Dimensioning and Tolerancing (GD&T) eliminates the trial and error approach to product design.  It should be viewed as a design methodology ensuring dimensions and tolerances are developed to suit feature function and mating […]

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Variation in Production and Why GD&T is Superior to Coordinate Tolerancing

By Doug Keller | Published March 4, 2014

Today’s engineers have at their disposal an impressive array of design tools enabling them to simulate, and design for many of the stresses and conditions that parts are subjected to throughout the life of a product.  Methods used by engineers range from hand calculations to sophisticated computer models.  The design process usually begins by creating […]

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The instructor is GDTP certified by ASME in accordance with the qualifications of ASME Y14.5.2 in the Senior level.