[viernullvier]

> I don't think it has the ability to select arbitrary edges and apply such features (I could be wrong).

That's actually how it works. Chamfers and fillets are handled by OpenCascade, so they can be applied to arbitrary edges. They only exist on the solid model though, so they are not integrated with the solver.

I'd be curious to see how native chamfers/fillets in solvespace would work, I imagine some amazing things could be done if they'd be part of the solver.