I know that AutoCad 3D can do the job - but Inventor and SolidWorks do it so much easier and better (once you learn the software).
Yeah yeah I know it would be a lot easier in SolidWorks, but were would be the challenge in that?
![Roll Eyes :rolleyes: :rolleyes:](http://www.mysmiley.net/imgs/smile/rolleye/rolleye0001.gif)
Think of this as using vintage 3D CAD.
![Big Grin :D :D](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f600.png)
Don't know if it would work for you, but might it be possible to model the spring in relaxed state as well as in compressed state and then have the software do some sort of "tweening" between the two?
Henrik
That is kind of what I am thinking that I am going to do.