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What tool can be used to create non-manifold geometry

Jeff Franklin's picture

Wondering what library in occ should can be used to make a non-manifold solid body from a manifold solid body.

For instance you have two separate cubes next to one another and they have two faces that are the same as one another but are only associated to a single cube. It seem like a routine/method that takes 2 TopAbs_SOLID shapes and generates a TopAbs_COMPSOLID would be the right tool.

Does anyone have any experiences with this?