Alternatives and complementary tools
While not an extension, you can round corners natively. Round Corner Extension Sketchup Free Download
Note: While many of Fredo6's plugins were historically free, some have transitioned to a small "donation-ware" licensing fee for newer versions of SketchUp. Always check the SketchUcation page for the most current version compatibility. an .RBZ file once you've downloaded it? Alternatives and complementary tools While not an extension,
SketchUp crashes when I hit apply. Solution: You tried to round a corner that is smaller than 1mm. SketchUp hates "tiny" geometry. Make your radius larger. Round Corner Extension Sketchup Free Download