Hi,

I am using BRepSolidBoundaryCreator.Beta to create a 3D-model with our terrain mesh as the top layer. The model is created without problem, but after clipping the model, edges of the clipped model is jagged and geometryvalidator shows the sides and some parts where the sides break the top layer as "InvalidParts" due to non planar surfaces.

It works just fine if I generate a mesh with 90° corners to run through the BRepSolidBoundaryCreator.Beta and not clip it. The goal is however being able to clip the resulting 3D model to any shape, save it as in STL-format and still have sharp edges. Any ideas on how to achieve that?

My workbench so far:

My result: