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Your Source for GD&T Training and Materials

Brett Lance
  • Brett Lance
  • Senior GD&T Professional
  • Technical Coach
  • E-mail Brett

Brett is a Senior Mechanical Design Engineer with over 20 years of experience in the manufacturing environment, including 9 years of Quality Assurance background and 12 years in Mechanical Engineering. He has extensive experience in die casting design, die tooling, and casting processes, and an excellent background in stamping and machining processes. His strong metrology background allows him to design measurement fixtures and functional gages for a variety of commodities. He is an apprentice Statistical Engineer employing the Shainin techniques.

Brett has been trained in and uses Motorola's Six Sigma design as well as Boothroyd-Dewhurst Design for Assembly and Design for Manufacturability. Brett works with mechanical design groups to help ensure a high degree of manufacturability with improved ease of assembly through the use of Geometric Tolerancing. He has employed DFA/DFM with Geometric Tolerancing and Tolerance Stack-Up analysis to reduce purchased parts and assembly costs by over $5,000,000 annually.

ASME Affiliations:

Brett teaches basic and advanced GD&T courses and Tolerance Analysis using Geometric Tolerancing.


  • "I've learned more in just a few hours with the Tec-Ease GD&T Hierarchy Coach than in 12 weeks taking a similar on-line program. I look forward to the time I get to spend viewing the presentations and taking the interactive quizzes. Here at FOX the Tec-Ease GD&T Hierarchy Coach is rated "best in class".
    - Marvin D.
  • "Thank you for all that you do. Your "Tips" are INVALUABLE -- I frequently refer to the archive for advice when I run across a sticky tolerancing puzzle."
    - Barbara P.
  • "I must say that I think you are the best GDT trainer/vendor of the many available. I have purchased your GDT charts, aids, and "The GDT Hierarchy" and found them to be clear and well illustrated."
    - Michael W.
  • "I absolutely love this course! (The GD&T Hierarchy Coach) I can go as slow as I want and go back and review slides if I need to. This is the way to go. I don't interrupt others learning, yet I get to fully understand before I move on."
    - Gwen M.
  • "Things are going well with our project. In less than a year we will be shipping a clinically significant, quality changing product to China from a US manufacturer. Cost competitive with great clinical outcome. I love the approach. I appreciate your help on this project. We have had a lot of feedback from our supply base saying great use of datum's and design for manufacturability."
    - Dave D.