Hi,
to create a mid surface in part this sample might work:
a shell with say 4 mm wall thickness
- create an offset surface by half the wall thickness
(2 mm) from the outside surface direction: inside
- save the .par as Parasolid
- export option: activate 'sheets (constructions)'
- re import that Parasolid
Option: Make Base feature, Boolean solids, stitch surfaces
You should now have a base feature *and* a construction
surface.
- delete the base feature
and you should be left with just the mid-surface. The downside
is: this surface is no longer associative with the original
part.
dy