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Home » Authors » Bill Tandler

Bill Tandler

Bill Tandler is president and founder of Multi Metrics Inc. (Menlo Park, CA). For more information, call (650) 328-0200, e-mail bill@multimetrics.com or visit www.multimetrics.com .
Articles

ARTICLES

QM 0222 Measurement GD&T Feature
Measurement

Turning GD&T From Grim, Depressing & Troublesome Into Something Grand, Delightful & Tantalizing

For the sake of industries around the world, it is time to make GD&T much easier to use, and much easier to use correctly.
Bill Tandler
February 1, 2022
12 Comments

It is time to make GD&T much easier to use correctly. Here, then, are a number of examples of confusing Y14.5 Standard terms and definitions, along with recommended improvements.


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Empowering GD&T

Empowering GD&T

Based on the ASME Y14.5 2009 Standard. Without GD&T, manufacturing is a guessing game.
Bill Tandler
June 1, 2017
4 Comments

GD&T is the only tool we have with which to manage machine part geometry perfectly. In particular, it’s the only tool we have with which to impose truly functional limits of imperfection on machine part features and actually guarantee assembly and operation prior to drawing release.


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QM-Columnists-GDT.jpg
GD&T Workshop

GD&T Best Practices

Controlling the geometry of slots.
Bill Tandler
April 12, 2013
2 Comments

Let’s look at what it takes to control the geometry of slots, and see if there is indeed a “best practice.”


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gdt code map functionality
GD&T Workshop

GD&T Functionality

A good way to learn more about GD&T is to critique its application.
Bill Tandler
January 3, 2013
No Comments

GD&T is difficult to get right even though it is very logical. What does “right” mean? Right means several things, but mainly that it imposes achievable, fully function based and only necessary permissible limits of imperfection using absolutely syntactically correct code.


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QM-Columnists-GDT.jpg
GD&T Workshop

GD&T Pop Quiz Answers

Bill Tandler
December 4, 2012
One Comment

How did you do on November's GD&T pop quiz? Find out here!


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QM-Columnists-GDT.jpg
GD&T Workshop

GD&T Pop Quiz

Bill Tandler
November 1, 2012
One Comment

Surprise! It's a GD&T pop quiz.


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DRF establishment process refinements

GD&T Workshop: DRF Establishment Process Refinements

Bill Tandler
September 20, 2012
No Comments

Insights into the new tools provided by the ASME Y14.5 2009 Standard.


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GD&T Workshop: The DRF Construction Process

Bill Tandler
August 9, 2012
2 Comments
Consider the steps involved and the rules behind them.
Read More

GD&T Workshop: Establishing Datum Reference Frames

Bill Tandler
July 5, 2012
No Comments
The concepts, tool and rules...continued.




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GD&T Workshop: Datum Reference Frames

Bill Tandler
May 31, 2012
No Comments
Understand the concepts, tools and rules you need to establish.
Read More
View All Articles by Bill Tandler
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