Hallo Paul
Thank you for the model you uploaded. I could not figure out how to do the copy and solidify step, but I found an equally simple method: Insert-Shared Data-Merge/inheritance. Maybe you use a newer version of Creo, we use Creo 1, also called Creo elements/pro 5.0 from 2009
This method has several advantages to the export/import method (2) in my original question, so I think that we will test it out. But other ideas are of cause welcome still
I have not yet read your paper, it is mainly about the stresses in the welding I see, which is not what I am looking for at the moment. But I'll go through it later (I do read German)
Viele Grusse, Torkil