I have a test case with a relatively simple shape that I'm trying to add fillets to, as can be done with SolidWORKS.

The test case has the basic shape, as a group, that was created using native SU tools. I copied the group and used the Mind Sight Bevel Tool, the older Fredo Round Corner tool, and the newer Fredo FredoCorner tool.

The Bevel tool did the best at adding the R3 fillet as shown, with one slight post edit to change a softened edge back to a regular edge to clean up the results.

The older Round Corner tool did the next best filleting, but did require going back into the results and putting lines back in place to re-close the shape.

The newer FredoCorner tool broke down significantly when trying to generate the desired fillets.

Please feel free to contact me if I can help you replicate the Fredo Round Corner and FredoCorner results I'm seeing.

Brad

Fillet Tool Test A.skp