Finding Hard Edges in a open mesh

Hi,

im working on IFC files that linked in or opened in revit where most of the geometry is mesh geometry. to annotate and work further with this geometry i want to find the hard edges of the mesh.

i have created a script that finds hard edges on watertight meshes. (this script is probably possible to optimize quite a bit, since im fairly new to dynamo).

i need a script that also work on meshes that are not watertight and i have no idea where to start solving this, so if anyone want to point me in the right direction i would be grateful:) script and test file is attached.

edgefinder.dyn (52.3 KB) testCube.rvt (400 KB)

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