Surface Middle Surface

Middle surface is a simplification representation of complex solid shapes. It's used most for model simplification.

To open Middle Surface:

In the dialog , select the type of you want to create the middle surface:

a. raw solid shape
b. middle surfaces of the raw solid shape, "Stitch Mid-Surfs" is checked.
a. select a seed face
b. searched same level surfaces on the same solid
a. select a seed face
b. searched same level surfaces on the same solid, the angle tolerance is set as 70.0