Sketchup Round Corner Crack Top [SAFE]

The designer had previously drawn a center guide line across the top face (to align leg holes). That guide line was a hidden, un-deleted edge. The Round Corner tried to round across that internal edge, creating a crack.

Why does this happen? More importantly, how do you fix it without scrapping hours of work? sketchup round corner crack top

This phenomenon, known colloquially in forums as the is a common yet fixable geometry error. It appears as a jagged tear, a missing face, or a visible seam running across the uppermost surface of your model. The designer had previously drawn a center guide

If you are a 3D modeler, product designer, or architect using SketchUp, you have likely experienced that frustrating moment of imperfection. You apply the Round Corner plugin (by Fredo6) to a cube or a cylinder, hoping for a smooth, pristine fillet. But instead, you look at the top face and see it: an ugly, unwanted crack . Why does this happen

Undo the fillet. Delete the internal guide line. Soften the top face edges. Re-apply Round Corner. Result: Perfect, crack-free top. Conclusion The SketchUp round corner crack top is not a bug in Fredo6’s plugin; it is a symptom of messy native SketchUp geometry. While frustrating, it is entirely fixable. Whether you choose to manually stitch the missing face, use the Intersect Faces repair, or prevent it by grouping your top face, you now have the toolkit to defeat the crack.

Remember: Clean geometry is happy geometry. Always run Solid Inspector before rounding, and apply fillets in small increments. Happy modeling!