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3D GD&T Annotations

Status: New Idea
by Valued Contributor gary.belisle on ‎08-22-2013 12:43 PM

Please implement ASME Y14.41 into the 3D modeling environment. Specifically, GD&T annotations. There used to be a Labs technology preview, but what happpened to that? Weld symbols seem to work well, why not build on that?

by Valued Contributor gary.belisle on ‎08-23-2013 05:54 AM

Here is a good article on MBD (Model Based Definition) that provides a good explanation on the benefit of embedding GD&T. The end game of course is a leaner, more tightly integrated, design and inspection process.


Model Based Definitions



by *Expert Elite* on ‎11-14-2013 09:02 AM

This is the future Autodesk.. 

Whatever you want to call it...



ASME Y14.41



IDW/DWG should be like Sanskrit.. A "dead" language.. STOP FOCUSING ON IDW/DWG IMPROVEMENTS.. Its simply a waste of time at this point.. Any focus in the idw/dwg area should ALL be directed away from 2d drawings and into implementing "model based definition" or 3d PMI.. 


Down with idw files.. walk the plank... 



by Distinguished Contributor mikeh on ‎11-14-2013 10:00 AM

As much as I'd like paper to go away the need for 2D prints isn't going to go away for a long time.  Especially for Welded IAMs and Assemblies (i.e. Products created with manual labor).  Any parts prgrammed and createded by machines, I agree.  Let the computers do the communication.


We stay away from GD&T due to the complexity and the training it would take on the floor, and we do a good job detailing it to get the intent across.


As for keeping GD&T out of the IDW environment, we don't have a need for it so I wouldn't have an issue with keeping it out.


At this time we still have a fear of putting an electronic device next to a welder to view prints, just don't think they'll last too long in that environment.


Don't kill the IDW quite yet.  Thanks

by Valued Contributor gary.belisle on ‎11-14-2013 10:39 AM

I agree with both points mcgyvr and mikeh are making. 2D prints will never go away and the drawing environment should improve as needed. That said, from what I've seen with some MBD/PMI examples out there, the 2D print is a by-product of the MBD/PMI 3D model.


The ability to open a MBD pdf file with all the 2D views and then rotate the 3D model and select a dimension that hi-lights all the associated features is a POWERFUL communications advantage.

by rodl on ‎04-04-2014 09:58 AM
Hi 3D GD&T what is it and how will it help me. It all starts off in the design. I model the 3D in Inventor. Do drawings or use the part and get the parts made. Easy. Well until you have production problems. Machine tolerance or worker fatigue etc. No problem just add the information in the drawing. Well would not be great if the information could be added to the model and modelling done to check for problems before even the drawings are done. then retrieve the information into the drawings from the model. I have added some website to look at and explain 3D GD&T in more detail-- Images Yes Autodesk did look at it in 2010, but what happened? Thanks
by rodl on ‎04-04-2014 07:38 PM
A quote:"Kenneth W. Chase, Ph.D. Mechanical Engineering Department Brigham Young University Provo, Utah Future of Tolerance Analysis It is a pleasure to address the question: “What is the future of tolerance analysis?” It is a subject about which I have strong feelings. I first began teaching a course in Design for Manufacture after returning from two summers working for John Deere in 1980. Two gray-haired engineers there, who were brothers, one a designer and the other a manufacturing engineer, persuaded me that mechanical engineers should include manufacturing considerations in their designs. They spent a lot of time with me, “filling in the gaps in my education.” I began to see that tolerance analysis was the vehicle to bring design and manufacturing together. Using a common mathematical model that combines the performance requirements of the designer with the process requirements of the manufacturer provides a quantitative tool for estimating the effects each has upon the other. It truly promotes the concept of Concurrent Engineering. At last, I can honestly say the tools are here, ready to earn a place alongside other standard CAD applications, such as kinematics, dynamics, vibrations, and finite element analysis (FEA). CAD-based tolerancing is quite sophisticated and advanced for a new CAD/CAM/CAE (Computer Aided Design/ Computer Aided Manufacturing/Computer Aided Engineering) tool. It had to be. No one today will accept an analysis tool that is not graphical and integrated with CAD. Inventor software designers and voters take note NO ONE TODAY WILLACCEPT AN ANALYSIS TOOL THAT IS NOT GRAPHICAL AND INTEGRATED WITH CAD.
by Active Contributor Dickerson2012 on ‎06-26-2014 06:02 PM

This would be a major time saver if Inventor could display the MMC of any FOS or a true position or projected tolernace zone, a translucent envelope comes to mind. If this information was available at the API level could we also query the GD&T information of the

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