fail-safe system for applying Geometric
targeted at everyone ever trained in GD&T
and who has suffered the frustrating aftermath of trying to
apply it ‘back on the job’.
this course, participants will . . .
in a unique step-by-step dimensioning and tolerancing process.
process consists of specific questions to be asked that consider
functional requirements, manufacturing options and quality procedures,
and lead from the best possible beginning to the natural completion of a
product’s geometric definition.
to visualize manufacturing and inspection procedures
based on Dimensioning and
Tolerancing symbology used.
the logic and analytical reasoning required
to step anyone through to their product’s optimal GD&T completion.
to preserve and improve part functionality
reducing manufacturing costs.
this systematic procedure
of geometric definition to the participant company’s product line.
and refresh knowledge gained
in prior basic GD&T training courses.
Should Attend? This
course is directed to design, drafting and engineering personnel
or anyone wishing to gain an advanced knowledge of applying
Geometric Symbology to products.
It is for those wishing to learn a unique systematic
approach in applying geometric parameters within which a product
must conform to function.
Will This Course Cover?
and reinforce information gained
in prior courses taken in GD&T and through on-the-job usage.
a unique systematic approach to product definition
using Geometric Symbology to improve functionality and reduce cost.
that incorporate manufacturing and/or inspection concurrent engineering
participants to engage in Mr. Meadows’ unique step-by-step
dimensioning and tolerancing process.
This process consists of specific questions to be asked and
answered that lead from the best possible beginning to the natural
completion of a product’s geometric definition.
to optimize the participant’s products.
techniques that use basic principles existing
in ASME Y14.5, but extend the principles…and far exceed the
on ‘real world’ and more complicated parts not
found in examples shown in ASME Y14.5.
not only how to use Geometric Symbology, but when to use it and when NOT
to use it. Learn why use it
and in what order.
why certain choices of symbology complicate manufacturing
and inspection procedures while others simplify them.
recommend a course length of 3-4 days.
Participants should have completed a basic 4-day course in
the Dimensioning and Tolerancing of parts or have equivalent work
use of a sample packet of your product drawings is a key element of this
course as a guide to the tailoring of information covered.
We wish to optimize time spent in this course; therefore, a
sample packet representative of your products’ geometric shapes is
requested prior to the workshop for the instructor to study/incorporate
into his lesson plan.
quality of the use of Geometric Symbology or even a total lack of use of
Geometric Symbology on these drawings when provided to the instructor is
of secondary importance to the instructor.
He is most interested in the potential use of geometric controls
to improve product function, reduce part cost, increase completeness of
definition and the improvement of your product drawings into
legally-defensible documents representative of your functional
course deals specifically with the application of optimal geometric
controls on your products
and ‘real world’ parts and products.
This workshop focuses on design applications of Geometric
Symbology. It uses the
concepts and step-by-step procedures for product definition developed
specially by Mr. Meadows while working as a consultant on thousands of
product lines in every conceivable industry.
Course Outline by James D. Meadows for:
Practical Design Techniques for Rigid Parts
GD&T [Design Techniques]
The focus of this portion of the course deals specifically with
the application of
geometric controls on ‘real world’ parts and products
(See Item 2 on the next page)
Training (Problem Solving and Assemblies)
Fail-Safe Approach – how it’s done
philosophy and logic behind the step-by-step procedure for applying
the maze – key to the locked doors
One team – One Job – One Goal
to visualize part production based on Geometric Symbology
options through the process of elimination
production vs. inspection costs created by different approaches
the need for Material Review Boards
of original mating parts
from plus and minus to geometric tolerancing in assemblies
selection based on physical contact and alignment in the assembly
based on manufacturing capability and cost reduction
selection based on balance, alignment and load
of geometric characteristics in the assembly
Feature Control Frames as Sentences
conveyed through symbology
manufacturing processes effects datum selection
a manufacturing sequence
vs. Indirect Tolerancing in an Assembly
Functionality through Linear Segmented Tolerancing
Concise Tolerancing Methodology
and Varied Geometries Toleranced for FIT
Tolerancing in Assemblies
Advantages and Disadvantages of Geometric Controls
Functionality through Datum Selection
Reasoning in Geometric Characteristic Selection
Tolerancing Methods to Assure Functionality
Yields through Multiple Controls
Feature Control Frames
Controls and Optimized Tolerances
positional tolerancing vs. multiple single segment position controls
profile tolerancing vs. two single segment profile controls
tolerancing at MMC (when TO and NOT TO use it); Allowing inspection to
pass everything that functions
Datums – Part Stabilization & Where to Measure From
features of size (tolerance zone growth vs. tolerance zone movement)
and separate functional requirements
targets on irregular surfaces
Metal & Flexible Parts/3-D Surfaces
for controlling Size, Form, Orientation & Location of irregular
datums; Step datums; Equalizing datums
metal and plastic parts (
Part definition; Datum selection; Hole pattern location)
and complex parts (datum selection)
Preservation – Castings, Wall Breakout and Binding
principle (unique effects on controlled features)
wall thickness calculations
Boundary Concept for Tolerance Analysis and Verification
Applying ‘The System’ to your Parts
part prints with assembly drawings; Work on client company product
drawings; Application of concepts to ‘real world’
GD&T Basic Principles [Review]
of essential principles and topics selected by course participants at the
beginning of the first day’s session from the following Basic GD&T
of Geometric Definition