Hello, I did all my assembly, the basis of which is a mechanically welded chassis.
Everything is finished, EXCEPT: that I have to change the thickness of my hollow profiles...
When I make this modification, it becomes horrible, all my constraints are turned upside down, it no longer recognizes the faces, in short, it's s****.
Is there a trick to counter this? Because now to put everything back I have it for a long time....
as it is a 3D sketch by changing the sketch of the profile by editing it as said @bart without changing the format its keeps the references. but it leaves the reference in the original thickness.
Having had this type of problem, a great sage of CAD told me that it was necessary to establish the constraints on the plans and not on the faces. So when you change the structure of the tubes, everything stays in place.
So in your case, you have to retype everything.....
The software refers to a surface that has a unique code. If you change the thickness of your profile of your sketch it changes the code of the surface so you will have all your constraints to take over. On the other hand, if you modify your basic sketches by modifying your dimensions, there is no bp because the resulting surface is the same.
I'll try this: "Save as" your blend. "Save as" your welded mechanical part Edit your sketches Replace your modified part with the new one and see if it bugs.
The problem is that each element (line, circle,...) of the sketch of your .sldlfp file (lib feat part) with the modified thickness must have the same name as the elements of the original .sldlfp file so as not to lose the references.
Normally, if you open the original .sldlfp file, you make a take-away composition that you rename with the new thickness and then in the sketch of the created file, you modify the dimensions without touching the lines and circles, and there normally it doesn't move.
As @dargaud.anthony says, the entities in the sketch must have the same name. In general, it works well on the old profile libraries because they were made from copy to copy with always the same source, so always the same entity names!
In your case, you should try copying the sldlfp you are using today for your welded build and edit just on the thickness. When you go back to SW to change the section for this new profile, your constraints should follow.
At least you will avoid this kind of inconvenience.
@coin37coin, I don't really like the "king of hacking":) I prefer long-term solutions, but when you're up against the wall, sometimes you don't necessarily have to try to get over it, but make a hole in it! ;)