GD&T - Geometric Dimensioning and Tolerancing

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GD&T - Geometric Dimensioning and Tolerancing

jbeach50
I'm evaluating Librecad for development of GD&T training materials.
Question:  Does Librecad have a utility to insert GD&T symbols - true position, datums, flatness etc. ?
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Re: GD&T - Geometric Dimensioning and Tolerancing

wasntme
I'm in the same situation - by looking at the post, there don't look to be a reply to this. GT&D can get deep in a hurry but rather simple once understood.

My CAD background starts with DOS based Autocad and about every brand in between to modern day 3d apps. What i can say from that is Libracad is an excellent 2d app that will hopefully include GD&T sometime in the future. I would pay for a plugin / add-on if it were available.
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Re: GD&T - Geometric Dimensioning and Tolerancing

sand1024
well, better support of tolerance is needed indeed. We have a plans to improve support of dimensions, so most probably that will be included there.

Could you provide a couple of references of what you're looking for that might be used as an additional source of inspiration?

Just to be sure that we're on the same page - you've refer to support of something like this -
https://formlabs.com/blog/gdt-geometric-dimensioning-and-tolerancing/?
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Re: GD&T - Geometric Dimensioning and Tolerancing

wasntme

sand1024 wrote
well, better support of tolerance is needed indeed. We have a plans to improve support of dimensions, so most probably that will be included there.

Could you provide a couple of references of what you're looking for that might be used as an additional source of inspiration?

Just to be sure that we're on the same page - you've refer to support of something like this -
https://formlabs.com/blog/gdt-geometric-dimensioning-and-tolerancing/?
************
Yes, this is what i was referring to, GD&T dimension and tolerancing.

Even though I've used it for years, there would not be that many occasions for me to use with LibraCad.  But it sure would be the icing on the cake if looking to upgrade dimensioning. Any designer / draftsman would be required to know and use in today's manufacturing world.

In looking for a new do-everything CAD app,  i've found there don't exist any one app that does all i need so had to go with several. Libracad very well fits my 2d world,  fancy and gets the job done. At first i was surprised to find it didn't do GD&T but on second thought - it did everything else well, as in very well.

I would think programming in the GD&T options for Libracad would be a nightmare, especially if one were to try a live auditing scheme. I've not known any software to have this ability except Solidworks - which i quit using at ver 2015. I only mention this as i've seen way to many instances were GD&T is used, over used, and darn near impossible to interpret design intent. The original goal of GD&T was to simplify, which it does - usually, until over baked use.

Programming this in would be much simpler just to provide the user with the standard icons, basically scalable blocks, and an associated dialog box to make minor select changes as needed. Let the user make the mistakes, their name goes in the title block.
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Re: GD&T - Geometric Dimensioning and Tolerancing

sand1024
Oh, I see. Yes, you're right - full automatic support of GD&T is hard to be implemented in some nearest features.

However, as for support of all graphical things (datum etc.) and letting the user to enter values - yes, that's in plans, I hope it will be added in nearest 1-2 months together with other improvement of dimensions, like  DIMSTYLE support and ordinate coordinates.  

If you have any specific requirements or feature requests - please share them.

So far there is a plugin that provides some support of  tolerance https://forum.librecad.org/I-have-finished-a-plugin-for-dealing-with-ISO-tolerances-and-fittings-td5725879.html

Yet that plugin was not reviewed or integrated into LibreCAD yet so it's hard to recommend it yet.