SketchUp cracks or missing faces during rounding occur when geometry falls below the application’s 0.025 mm tolerance limit, commonly resolved by scaling up the model by 100x or 1000x before applying the RoundCorner tool. Alternative solutions include reducing the segment count or switching to the more robust FredoCorner plugin for complex intersections. To learn more about fixing these issues, see the discussion at SketchUcation . Round Corner Issues | sketchucation

: SketchUp has a hard time forming faces when edges are extremely short (typically under 1mm). When the plugin rounds a corner with high segments or small offsets, the resulting geometry can be too small for SketchUp to fill, leaving holes or "cracks". Complex Geometry

Round corner doesnt work correctly - Extensions - SketchUp Community

Beveling Manually

: Use the Tape Measure tool to create guides, draw your curves manually with the Arc tool , and use Push/Pull to trim the edges.

=link= Crack Top: Sketchup Round Corner

SketchUp cracks or missing faces during rounding occur when geometry falls below the application’s 0.025 mm tolerance limit, commonly resolved by scaling up the model by 100x or 1000x before applying the RoundCorner tool. Alternative solutions include reducing the segment count or switching to the more robust FredoCorner plugin for complex intersections. To learn more about fixing these issues, see the discussion at SketchUcation . Round Corner Issues | sketchucation

: SketchUp has a hard time forming faces when edges are extremely short (typically under 1mm). When the plugin rounds a corner with high segments or small offsets, the resulting geometry can be too small for SketchUp to fill, leaving holes or "cracks". Complex Geometry

Round corner doesnt work correctly - Extensions - SketchUp Community

Beveling Manually

: Use the Tape Measure tool to create guides, draw your curves manually with the Arc tool , and use Push/Pull to trim the edges.