The Round Corner tool works best on Solid Groups.
Visually, the crack appears as a thin, white, jagged gap or a series of broken lines along the edge where a rounded corner meets the main body of your object. It looks like the rounded piece is separating from the rest of the geometry.
This happens almost exclusively when you use Round Corner (by Fredo6) or Solid Tools on complex meshes.
High-resolution textures confuse the rounding algorithm. When you round an edge, the plugin tries to triangulate the texture coordinates. If a 4K wood texture is applied, the crash is almost guaranteed.
Note on "Crack": If you were specifically looking for a plugin named "Corner Crack" (perhaps to create damaged concrete edges), that is a niche feature usually achieved using the Artisan Organic Toolset (sculpting) or by manually disrupting the geometry with the Move tool on a subdivided surface. sketchup round corner crack
Creating smooth, rounded edges in SketchUp often feels like a rite of passage for 3D modelers. While the "crack" in the process usually refers to technical glitches—like small holes in the geometry or plugin crashes—overcoming them is key to a professional result. The Solid Model Strategy
To avoid "cracked" or broken geometry, your goal is to maintain a Solid Group or Solid Component. SketchUp considers a group "solid" when every edge is shared by exactly two faces, forming a perfectly sealed volume. 1. The Expert Path: Using Plugins
The most popular way to round edges is via Fredo6's RoundCorner or its successor, FredoCorner.
The Workflow: Select the edges, set your radius and segment count, and click apply. The Round Corner tool works best on Solid Groups
Fixing Crashes: If SketchUp crashes during this process, it's often due to low memory or outdated libraries. Ensure LibFredo6 is updated to the latest version and restart SketchUp.
Closing "Holes": Sometimes the plugin leaves tiny "cracks" (missing faces) at complex intersections. You can often fix these manually by drawing a single line across the gap to force SketchUp to heal the surface. 2. The Native Path: No Plugins Required
If you're using the SketchUp Free web version or want to avoid paid extensions, you can use the Follow Me tool.
In the SketchUp community, the "crack" refers to three distinct but related failures when using the RoundCorner extension (by Fredo6): geometry seams from modeling techniques
These issues usually occur when processing high-polygon curves or low-tolerance edges.
Do not just select an edge and hit "Round." Prep the model first.
"Round corner crack" describes a visible split or gap that appears along a rounded edge of a 3D model in SketchUp. It can refer to shading/artifact issues, geometry seams from modeling techniques, or actual model topology problems that cause rendering, printing, or export errors.