Issues when importing Step files

Hi,
When I imported step files, cracks are always raised between surfaces as attached picture shows.
(But, when I import the same file using other packages, such as FreeCAD, it is OK.)
So, what is the reason? And what should I do?

Attachments: 
Dmitrii Pasukhin's picture

Hello, which version of OCC do you use? The same as inside FreeCAD?

There can be some difference in shape healing stage, for example. Or some specific post-processing.

Best regards, Dmitrii.

宁 魏's picture

The version of OCC used is 7.4.0 and the version of FreeCAD is 0.20.1.
Is the issue fixed in higher version (7.8.0)? Or, I need to modify the codes in OCC?

Dmitrii Pasukhin's picture

We have no file samples to know your issue. You can check from your side.

Best regards, Dmitrii.

宁 魏's picture

Thanks a lot