Researching through a threads it would appear that IGS or STEP
would be the way to go. But I also read that SW will open IPT files
directly. This first thread supports what I just said.
This thread has a link to a viewer for Inventor files if that is useful.
It is an assembly file, so I guess I will ask for a IGS or STEP.
Thanks, will look at the viewer.
Good luck with it. I hope it works out ok for you.