Dear all
Thanks a lot for your quick answers! I just recently switched to R25 (from R21) so there are obviosly a lot of new possibilities I missed...
I also thought of Pose Morph, but I could't get it to work as the final model consists of 3 parts, all connected in a Cloner Object. If possible I would like to keep it like that (and not convert it to a single object) so I can extend the middle part (clone) if needed. But with a single geometry, pose morph would be a possible solution.
The Transform Element seens to solve my problem! I first had to google this as I have never heard of it before... It's not very clear to me right now how it worked, as I only selected the edges on one of the elements (the bottom one) and then just copied the Transform Element to all of the 3 Elements. Misteriously it choose the right edge selection on the other elements as well. (See attached image - on the right the screw with the transform Elements and wider threads, on the right the base screw)
So, now I see kind of a path and hopefully will be able to figure out how to connect this all in xpresso and fine tune it.
Tanks alot for the help and suggestions!
Best,
Anja