Sketchup | Round Corner |link| Crack Top

The top face looks like a cracked desert floor.

by Fredo6 are designed to handle complex intersections that usually cause manual cracking. sketchup round corner crack top

If your rounding offset is larger than the distance between two edges, the geometry will "overlap," causing the plugin to produce red warning lines and eventually "cracked" or missing faces. The top face looks like a cracked desert floor

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. This phenomenon, known colloquially in forums as the

Always run Right-click → Reverse Faces on your object before using Round Corner. Ensure all exterior faces are white (front) . A mix of front/back faces is a guaranteed way to get cracks on top surfaces.

The Round Corner algorithm works by offsetting edges and trimming geometry. When you apply a fillet to a vertical edge that meets a flat top surface, the extension tries to blend the curve into the plane. If the relative to the thickness of the top slab, the geometry collapses into itself, creating "cracks."