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# Fundamentals of GD&T 1994 2-day ET2401

Providing you have a basic understanding of mechanical drawings, this course teaches the terms, rules, symbols, and concepts of GD&T as prescribed in the ASME Y14.5M-1994 Standard. Utilizing the expertise of world-renowned GD&T expert Alex Krulikowski, the course offers an in-depth explanation of geometric symbols, including each symbol's requirements, tolerance zones, and limitations. It also includes a comparison of GD&T to coordinate tolerancing; an explanation of tolerance zones; Rules #1 and #2; form and orientation controls; tolerance of position; runout and profile controls. Newly acquired learning is reinforced throughout the class with more than 300 practice problems. Each attendee receives a robust collection of learning resources including:
• The Fundamentals of GD&T (ASME Y14.5M-1994) textbook, by Alex Krulikowski
• A GD&T Ultimate Pocket Guide ('94)
• A Fundamentals of GD&T Exercise Workbook ('94)
• 30-day access to the Fundamentals of GD&T '94 web training course (\$209 value) to practice and reinforce what was learned in the classroom
Tens of thousands of students have learned GD&T through Alex Krulikowski’s textbooks, self-study courses, computer based training, and online learning center. Students who attend courses like this one walk away with more than knowledge. They gain on-the-job skills because the learning materials are performance-based.
##### Learning Objectives
By attending this class, you will be able to:
• Describe what dimensioning and tolerancing is
• Describe the key terms used in geometric tolerancing
• Recognize the modifiers and symbols used in GD&T
• Explain the rules used in GD&T
• Describe the concepts of basic dimensions, worst-case boundary, virtual condition, inner and outer boundary, and bonus tolerance
• Interpret the various types of tolerances (flatness, straightness, circularity, cylindricity, perpendicularity, angularity, parallelism, position, runout, and profile)
• Describe the datum system
• Interpret applications of datum targets, feature of size datum specifications (RFS & MMC)
• Calculate tolerance of position tolerance values using the fixed and floating fastener formulas
##### Who Should Attend
This course is valuable for individuals who create or interpret engineering drawings, product and gage designers; process, product, and manufacturing engineers; supplier quality engineers/professionals; CMM operators; buyers/purchasers; checkers; inspectors; technicians; and sales engineers/professionals.

##### Prerequisites
Student should have completed ETI's Engineering Drawing Requirements course or equivalent.
Introduction
• Engineering drawings
• GD&T/coordinate dimensioning comparison
• Eight key GD&T terms
Terminology
• GD&T modifiers and symbols
• Rule #1 and Rule #2
• Basic dimensions, virtual condition, bonus tolerance
Form Controls
• Flatness
• Straightness
• Circularity
• Cylindricity
Datums
• The datum system (planar datums)
• Interpreting datum targets
• Feature of size datum specifications (RFS)
• Feature of size datum specifications (MMC)
Orientation Controls
• Perpendicularity
• Angularity
• Parallelism
Tolerance of Position Controls
• Definitions, conventions, advantages, basic theories
• RFS and MMC tolerance of position applications
• Cartoon gages for tolerance of position (MMC) applications
• Tolerance of position special applications
• Calculating distances on parts dimensioned with tolerance of position
• Fixed and floating fastener formulas
Concentricity / Symmetry Controls
• Concentricity
• Symmetry
Runout Controls
• Circular runout
• Total runout
Profile Controls
• Profile tolerancing
• Profile of a surface
• Profile of a line