GD&T Training, Tolerance Analysis Training, 3D Model-Based Definition, Model-Based Enterprise and PMI Training & Consulting - Get It Right™

From the fundamentals to advanced courses, our GD&T, Tolerance Analysis, and 3D-MBD training is based on the most rigorous understanding and implementations of these subjects available.

Books and Reference Materials

We offer a full-line of Geometric Dimensioning and Tolerancing (GD&T), Tolerance Analysis, Tolerance Stackup, 3D-GD&T™, 3D Model-Based Enterprise (MBE), 3D-Model-Based Definition (MBD), 3D-PMI training and reference materials. Including GD&T books, tolerance analysis books, GD&T wall charts, eBooks, tolerance analysis software, GD&T software, and printed materials. Our training material covers ASME Y14 standards and ISO standards, including ASME Y14.5, ASME Y14.41, ISO 1101, ISO 5459, ISO 16792, etc. Corporate discounts and licensing are available for bulk orders and site licenses. Place an order today or contact us to see how we can help you be more successful!

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Advanced Dimensional Management LLC - GD&T Training and Consulting

Offering a full-line of GD&T & Tolerance Analysis reference books, manuals, workbooks and software.

Please feel free to browse through our website. We’ve included lots of free information, materials taken from our books and training courses about GD&T, Tolerance Analysis , Dimensional Management, 3D- GD&T™, PMI, Model-Based Annotation, Annotated Models and Using Solid Models as Design Deliverables.

3d PMI Rendering

Annotated Model with PMI (Model-Based Annotation)

3D PMI, MBD, and 3D-GD&T™ Training.
ASME Y14.5-2009 Training and Reference Materials

We offer GD&T Training based on ASME Y14.5-2009, ASME Y14.5M-1994, and based on applicable. ISO GPS standards (ISO 1101, ISO 5459, etc.). Our GD&T training will help you understand GD&T and implement GD&T and dimensional management strategies throughout your product development and supply chain.

Book News:

“GD&T Update Guide: ASME Y14.5-2009: Changes, Improvements, and Clarifications”

For ASME Y14.5-2009

The “GD&T Update Guide: ASME Y14.5-2009″ discusses the changes and improvements in the ASME Y14.5-2009 standard. Changes in the structure, philosophy, expansion of scope, and the overall intent of ASME Y14.5-2009 are discussed. New terms, definitions, symbols, rules, feature types, tools, techniques, approaches, and changes made to each section of ASME Y14.5-2009 are also discussed. The “GD&T Update Guide: ASME Y14.5-2009″ also includes a detailed paragraph-by-paragraph explanation of the principal changes in the ASME Y14.5-2009 standard.

Book

A must-have for anyone who needs to understand GD&T and the ASME Y14.5-2009 standard.

Author’s Note: This is a great book, beautifully laid out, 212 pages with over 200 2D and 3D full-color illustrations. Many of the concepts explained are accompanied by figure sequences constructed to explain each step of a process. The book contains multiple approaches and examples of Datum Feature Simulation sequences and gaging examples. The “GD&T Update Guide: ASME Y14.5-2009″ will become a trusted resource for understanding GD&T.

Praise for “The GD&T Update Guide: ASME Y14.5-2009”, February, 2012

“The ‘GD&T Update Guide: ASME Y14.5-2009‘ by Bryan R. Fischer goes to great lengths to explain in text and numerous figures the meaning and application of the new Y14.5-2009 standard. This text also explains the subtleties of the new standard, not found even in the Y14.5-2009 standard itself or other texts on the ASME Y14.5-2009 standard.

This text is the best all-encompassing explanation of the ASME Y14.5-2009 standard. One would have to read and understand seven of the currently released books by other authors on ASME Y14.5-2009 to gather the same amount of information, and not every author addresses all of the material covered by the GD&T Update Guide.”

Submitted by a leading GD&T Subject-Matter Expert and ASME Certified Senior Level GD&T Professional from a major multinational corporation.

Note from Bryan: Thank you for the great review!

GD&T Wall Chart Set
Based on ASME Y14.5-2009 – Inch and Metric Sets available
Based on ASME Y14.5M-1994 – Inch and Metric Sets available

Advanced Dimensional Management Press
Bryan R. Fischer – 2010

Essential office and shop reference! Great for study and GD&T Certification preparation!

This is a set of four high-quality GD&T Wall Charts based on inch units. Each chart in the set highlights different aspects of GD&T. The charts are 11″ x 17″ and laminated for years of durability. These charts are an essential part of successfully implementing GD&T. Post them in common areas for quick reference – also good for offices, classrooms, cubicles, workspaces, labs, and shop areas. Call us for multiple-set discounts!

New! 3D PMI, MBD, and Advanced Applications of Solid Modeling Seminars

This seminar discusses Product and manufacturing Information (PMI), Model-Based Annotation, Annotated Models, Model- Based Definition, 3D-GD&T™, and Using 3D Digital Data as Design Deliverables. ASME Y14.41-2003, ISO 16792: 2006 and rules developed by Advanced Dimensional Management.

Other Book News:

In 2008, Bryan revised and created the 11th Edition of The IHS Drawing Requirements Manual, and wrote an extensive new chapter on PMI and Advanced Applications of Solid Modeling, which includes 3D- GD&T™ and using Digital Data and Annotated Solid Models as Deliverables.

This is a book in itself. It is based on the ASME Y14.41-2003 and ISO 16792-2006 standards, and MIL-DTL-31000C, and includes material on using PMI, 3D-GD&T™, and 3D digital data in industry, and on annotating 3D assemblies and weldments, which is not yet addressed in any of the standards.

Contact Us for more information about how we can help you understand and implement 3D-GD&T™, Annotated Models, Model-Based Annotation, Model-Based Definition, the ASME Y14.41-2003 and ISO 16792: 2006 standards. We want to help you succeed in this vital new area.

Our Approach and Materials:

Advanced Dimensional Management’s leading-edge courses, books, and training materials represent the latest thinking on GD&T, Tolerance Stackup, Tolerance Analysis, PMI, MBD, and 3D-GD&T™, Functional Dimensioning and Tolerancing and Dimensional Management. Our courses and materials are based on many years hands-on experience in design, engineering, manufacturing, assembly, and inspection environments, and we take a balanced, rational approach to the needs of our clients. Our materials and explanations are mathematically rigorous, yet they are presented in simple terms that are easy to understand. Our training courses are coordinated – the content of each course augments and reinforces the other courses. That is why our training series are so popular. Our newest course is our PMI, MBD, and Advanced Applications of Solid Modeling Seminar, which discusses using 3D Data as Design Deliverables, and is based in part on ASME Y14.41, ISO 16792 and Bryan’s work for IHS and industry.

Who We Are:

Welcome to Advanced Dimensional Management LLC, the worldwide leaders in Geometric Dimensioning and Tolerancing (GD&T), Plus and Minus Dimensioning and Tolerancing, Tolerance Stackup, Tolerance Analysis and Dimensional Management Training and Consulting. We are ASME Certified Senior Level GD&T Professionals, focused on bringing your staff to a higher level of capability. Our expertise includes ASME and ISO standards and practices, and we are experts in all Engineering Drawing and CAD standards.

Our Experience:

Our experience is varied, ranging from one-of-a-kind development parts to high-volume, mass-produced parts, in quantities of up to millions of parts per year. We have experience working in many industries with many processes, both manual and automated (CNC), including machining, casting, forging, injection-molding, stamping, forging, and many others. We have experience with many different product and part types, including extensive experience with flexible (non-rigid) and rigid parts and assemblies. We are comfortable working with very small parts and very large parts – our clients’ products run the gamut from parts you can barely see to parts that are so large they must be hoisted by a crane.
We offer our services throughout the country and around the world.We routinely work with engineering, design, inspection, quality, manufacturing and assembly staff, suppliers and customers, ensuring that everyone understands with the specifications. Let us help you increase your productivity, optimize your processes, reduce your cycle time and increase your quality.

Advanced Dimensional Management LLC has helped many companies to become more successful by improving their product definition and optimizing their dimensioning and tolerancing practices. Call us today to discuss how we can help you and your company achieve these important goals.

View Our Brochure »

ADVDM Recent News:

Resultant Condition – Explained

Posted by on Aug 24, 2014 | No Comments

Here’s a technical explanation of resultant condition.  Note that this explanation is in the context of ASME GD&T, but also applies to ISO GD&T (in GPS), with some caveats.  Believe it or not, this detailed explanation is simplified!  Understanding GD&T requires knowing and understanding layers of terms, definitions, and concepts, as well as the context for a specification.

Resultant Condition

Simply put, the resultant condition is the state of a toleranced feature at the other boundary, the boundary the design engineer believes they care less about.  Obviously, the design engineer must be cognizant of both the MMB and LMB for every feature, but in many cases, there is one boundary that is more functionally significant.

ASME Y14.5-2009 and prior versions defined the virtual condition of a feature as the collective effect of the nominal feature definition (specified size and shape) plus or minus the allowable form, size, orientation, and location variation as applicable.  Whether the allowable variation is added or subtracted is a function of whether the toleranced feature is an external or internal feature.  According to ASME Y14.5-2009, a virtual condition only exists if a feature is controlled by a geometric tolerance applied with an MMC or LMC modifier.  This is an unfortunate technicality, as the concept could be and should be expanded to other cases.  But, the definition is what it is.

The idea is that whichever material condition modifier is specified for the geometric tolerance, MMC or LMC, there is a virtual condition in the associated boundary, calculable by the appropriate addition or subtraction.

The resultant condition is the other boundary.  E.g., if a hole is defined by a directly-toleranced dimension and controlled by a positional tolerance with an MMC modifier, perhaps one of the most common use cases, there is a resultant condition that corresponds with the LMC for the hole.

The envelope principle in ASME obfuscates some of the issues at play, namely that the allowable form error specified for the feature is also part of the calculation.  Since, in ASME the envelope principle is the default, we sometimes forget the form error and how its limits affect the calculation. 

For a part dimensioned and toleranced in accordance with ASME Y14.5, the resultant condition is either

  • the sum or difference of the size, size tolerance, the geometric tolerance at the specified material condition, and the additional (bonus) tolerance for the opposite material condition, or
  • the sum or difference of the size, size tolerance, the geometric tolerance at the specified material condition, and the allowable form error at the other material condition, or
  • some combination of these.

To reinforce the last paragraph, the full additional (bonus) tolerance is only allowed (and in spec) if the toleranced feature has perfect form at the other size (the non-specified size).  E.g., if a hole has a positional tolerance applied with an MMC modifier, the only way that the full additional (bonus) tolerance is allowed and in-spec is if the hole has perfect form at LMC, which is not required.  If the hole has any form error, the amount of additional (bonus) tolerance is decreased by that form error.  The resultant condition worst-case boundary remains the same (it has the same value), but the variation that leads to that boundary differs.

Figure with MMB and LMB Calculations – LMB Equivalent with Resultant Condition in this Example

Figure with MMB and LMB Calculations – LMB Equivalent with Resultant Condition in this Example

These concepts are clarified in section 5.1 Boundaries (pages 52-62) in my book “The GD&T Update Guide: ASME Y14.5-2009” which includes many detailed examples of maximum material boundary (MMB) and least material boundary (LMB).  [Figure 5-5 from "The GD&T Update Guide" is shown above.]

New 3D Model-Based Workshops – 3D MBD and 3D MBE

Posted by on Oct 30, 2013 | No Comments

Sheet Metal Part with Flange QueryAdvanced Dimensional Management LLC and MBD360 LLC announce new workshops for 3D Model-Based Product Definition (3D MBD) and 3D Model-Based Business Processes™, including 3D Model-Based Enterprise (3D MBE) techniques.  These workshops help our clients reduce or eliminate their reliance on 2D drawings and understand and plan for success in a 3D model-based environment.  Many companies use CAD data as part of their product definition, but do so in an informal, uncontrolled manner, without fully understanding the consequences.  Our 3D MBD and 3D MBE workshops help companies understand how to improve today’s business processes and achieve optimized 3D Model-Based processes tomorrow.  We leverage many years of industrial experience and our work in development of 3D methods, standards, and software to help clients develop optimal implementations of 3D Model-Based Processes.

Our 3D Model-Based Product Definition (3D MBD) Workshops present an overview of the rules, techniques, pros, cons, and best-practices for 3D Model-Based Product Definition and using Solid Model data with or without 2D drawings.  Dataset structures, including drawing-only, drawing and model, and model-only datasets and their pros and cons are explained.  3D Product and Manufacturing Information (3D PMI) and its application are discussed.  Rules, methods, techniques, and ASME Y14.41, pros and cons and practices defined in the ASME Y14.41 standard are also discussed in detail.  The effects of using 3D MBD techniques on shortening the design and documentation development cycles, reducing redundancy and derivative data sets, reducing error and improving quality in downstream processes are explored.  ISO-based training is also available (ISO 16792, ISO 1101…).

Our 3D Model-Based Enterprise (3D MBE) Workshops present overviews and in-depth coverage of why 3D model-based business processes are needed, how 2D drawing-based business processes are inefficient and drive significant cost in an enterprise and its supply chain, how 3D Model-Based Product Definition (3D MBD) works, communication methods, migration and implementation planning for the move from 2D to 3D, incremental steps, product definition dataset classes and options, business cases, planning for successful migration and implementation, data formats, data quality, standards and standard practices, best practices, training and implementation strategies, and an overview of software tools to get there from here.  The initial workshop is transformational, driving culture change within an organization and its supply chain.  Follow-up workshops focus on the details for successful transition and implementation to 3D MBD and developing model-based processes for an optimized 3D Model-Based Enterprise.

ASME GDTP Survey Results Released

Posted by on Apr 5, 2013 | No Comments
GD&T Training Materials - GDTP Certification

GD&T Training Materials - GDTP Certification

Today ASME released the results of their recent survey of GDTP Certificate Holders.

We have helped many people become certified as ASME GD&T Professionals.  We can help you, your organization, and your company achieve a higher-level understanding of GD&T and optimize its implementation throughout your organization and supply chain.

From ASME Press Release:

“Highlights of this survey:

  • Two-thirds of GDTP Certificate Holders come from organizations that encourage certification
  • More than one-in-three of these organizations require GDTP Certification for being hired, promoted or maintaining a position.
  • At organizations in which GDTP Certificate Holders are employed, 80% of the      design process — from inception plans and individual components all the way to fully-finished products — is covered by various design standards.
  • Approximately 70% view GDTP Certification as:
    • an industry-recognized credential;
    • facilitating the transfer of knowledge;
    • making it easier to apply for new opportunities;
    • encouraging being hired, promoted or maintaining a position.
  • More than 50% see GDTP Certification as being in the best interest of the general public.
  • Seven-out-of-ten would recommend GDTP Certification to their direct reports.”  Copyright ASME 2013

Advanced Dimensional Management offers careful, thorough, technically accurate, and technically appropriate GD&T training and materials.  We know how to get you, your organization, and your supply chain to an optimal level of GD&T implementation.

Contact us if you would like information about how our training courses, mentoring and consulting services, and our books, material, and software can help you and your organization become more proficient in GD&T, certified in GD&T, and achieve a high-level understanding of tolerance analysis and dimensional management principles.

Bryan Fischer

Advanced Dimensional Management LLC

ASME Y14.5-2009 GD&T Seminar and ASME Y14.41 3D MBD Seminars

Posted by on Apr 19, 2012 | No Comments

Yesterday we completed our Seminar Series, which culminated in our ASME Y14.41 3D PMI and MBD Seminar, ASME Y14.5-2009 GD&T Update Seminar, and an impromptu 3D Model-Based Implementation Seminar.

I want to thank everyone who attended.  You were a great group and I enjoyed working with you.  Our discussions about the use of GD&T and 3D data in our businesses and supply chains were very interesting.

Keep up the good work!

Praise for “The GD&T Update Guide: ASME Y14.5-2009”

Praise for “The GD&T Update Guide: ASME Y14.5-2009”

Posted by on Mar 1, 2012 | No Comments

“The GD&T Update Guide: ASME Y14.5-2009 by Bryan R. Fischer goes to great lengths to explain in text and numerous figures the meaning and application of the new Y14.5-2009 standard. This text also explains the subtleties of the new standard, not found even in the Y14.5-2009 standard itself or other texts on the ASME Y14.5-2009 standard.

This text is the best all-encompassing explanation of the ASME Y14.5-2009 standard. One would have to read and understand seven of the currently released books by other authors on ASME Y14.5-2009 to gather the same amount of information, and not every author addresses all of the material covered by the GD&T Update Guide.”

Submitted by a leading GD&T Subject-Matter Expert and ASME Certified Senior Level GD&T Professional from a major multinational company

Note from Bryan: Thank you for the great review!

GD&T Training, GD&T Consulting, Tolerance Analysis Training, Tolerance Analysis Consulting, Dimensional Management Training and Consulting, 3D-MBD, 3D-MBE, 3D-PMI Training and Consulting, Standards Management and Consulting Service.