GD&T Mastery - Learning Path 

A structured learning path from understanding GD&T symbols, to confidently applying GD&T in real engineering designs, The why and why not . 

Learning Pyramid of GD&T


GD&T Learning Guide

A holistic guide on how to go about learning GD&T and Tolerance Stacks backed by real world experience .

GD&T Bootcamp - Instructor Led Course

A Self Paced Instructor Led Gated Online course which takes you through the fundamental concepts and reinforces with exercises and assignements.

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 Dive into our Self Paced Online Courses

Learning Path : 4 courses building from Basics to Application 

Course 1 : GD&T Basic Concepts

Topics Covered

  • The Need for GD&T 
  • Concepts of Features, Features of Size, Rule #1, Envelopes
  • Datums and Reference frames .  How are they created? How are they applied?
  • Symbols and their inspection methods, what they mean
  • What is Bonus tolerance , virtual condition 
  • Multiple Examples and exercises

Course 2   : GD&T Advanced Concepts 

Topics Covered

  • Composite position control and comparison with multi segment control
  • 3-2-1 Principle and Datum Targets, irregular surfaces
  • Projected Tolerance zone
  • Fixed and Floating Fasteners Tolerancing
  • Simultaneous Requirements
  • Patterns and slots

Course 3  : GD&T Applied to Components

Topics Covered

  • How to establish GD&T scheme for a component based on its application
  • How to decide the type and nature of geometric control for tolerancing
  • How to apply design intent into engineering drawing
  • Understand the practical gauging and inspection
  • 12+ Case studies

Course 4 : Basics of Tolerance Stackup Analysis 

Topics Covered

  • Basics of Fits system
  • How to do a simple Tolerance stackup analysis
  • What is statistical tolerancing
  • How to incorporate GD&T into Tolerance stackup analyses
  • Worst case vs RSS tolerance stackup

About The Author

Designer by heart , Engineer by Mind.
Worked in Automotive Product Development for 7 + years in Major OEM on Chassis and suspension design from concept to production .  
Currently building a knowledge platform for fellow design engineers to make learning engineering design easier more accessible and upskill the thinking to go beyond CAD and focus on Conceptual design driven by constraints backed by strong first principles.

Instructor on Udemy with  Best selling courses , teaching 82000+ students from 170+ countries with 30000+ ratings. 

Mufaddal Rasheed