[Solved: Toponaming] Changing base sketch breaks Part Design

[Cadder]

Hi, in Part Design sketches and their elements can completely break next steps as all attachment to faces, edges, etc. is done just via element names, not via some immutable id.

So if we add/remove edge/face in base sketch/object this attachment could become completely broken. I believe it's something widely known, is there open bug, workaround?

Is it worth to give example, or everybody encounter this problem?

Thanks.

[Shalmeneser]

Topological_naming_problem aka TNP

[chrisb]

or everybody encounter this problem?

Yes, everybody knows it and with much luck there will be improvements in the next version. If you follow the advice for creating stable models you can drastically improve stability of your models. There remain only few tools relying on generated geometry such as chamfer, fillet, thickness.

[Cadder]

Topological_naming_problem aka TNP

I was sure I'm not alone

advice for creating stable models

Unfortunately it adds a lot of work - instead of just stick to needed place/reference user need calculate positions.
I'll try realthunder fork.

Thanks you all!

[drmacro]

Topological_naming_problem aka TNP

I was sure I'm not alone

advice for creating stable models

Unfortunately it adds a lot of work - instead of just stick to needed place/reference user need calculate positions.
I'll try realthunder fork.

Thanks you all!

I know it is an unpopular opinion... But, slapping sketches on generated geometry with reckless abandon is not necessarily good practice. With or without TNP.

But, you are correct, the Linkstage3 version will allow this sort of modeling. But, even there TNP is only mitigated, not 100% gone.

Yes, there are those who say, it is good enough that it is like being 100%...but, if it is that good, then the tools provided to fix it aren't necessary, right?

[Cadder]

slapping sketches on generated geometry with reckless abandon is not necessarily good practice

May be from scientific point of view it's not good, but for me, as home user making models for 3D printing ability bind object to some corner or side is "must have" feature.

[drmacro]

slapping sketches on generated geometry with reckless abandon is not necessarily good practice

May be from scientific point of view it's not good, but for me, as home user making models for 3D printing ability bind object to some corner or side is "must have" feature.

I understand that many aren't interested in advanced skills or even long term model maintenance. And that ok to.

[Kunda1]

You can use Realthunder's Link branch if you want where he has a solution of toponaming. But learning how to use datum planes makes models more sustainable and transferable between CAD programs easier.

[drmacro]

... user need calculate positions.
...

For the record, this not true.