I have problem with my model after Non Manifold Add command.
One part of surface enlarge after running this command.
I try processing method standard with tolerance 1.E-4 and incremental checking with same tolerance.
But same problem.
Can anybody help me to solve?
By using solid / stitch command, I figured out that you have problems with surfaces 447 to 454. After deleting them and playing with the tolerance, non-manifold add command worked fine and without enlarging any entities.