Crack Top — Sketchup Round Corner Better

The Ultimate Guide to Fixing the "SketchUp Round Corner Crack Top" Issue

Prerequisites:

The Fix:

Over-Segmentation

: Using too many segments for a small radius creates unnecessary complexity that increases the chance of cracks. Six segments are usually plenty for a standard rounded edge.

1. Select edges where you want smooth shading and choose Soften/Smooth Edges.
2. Adjust the slider until seams disappear but sharp features remain crisp.
3. Run Cleanup extensions (e.g., CleanUp³) to remove zero-length edges, duplicate faces, and fix reversed faces in bulk.

• Pass 1: 0.5-inch radius.
• Pass 2: 1-inch radius.
• Pass 3: 2-inch radius. The plugin handles incremental geometry better than a massive single offset.