The strategy is to isolate the problem area, recreate the missing surface, and stitch it back into place:
Delete the giant copy; the original-sized component will automatically be updated with the perfectly rounded (and filled) geometry. Manual "Healing" Hidden Geometry (View > Hidden Geometry) to see the missing segments. Trace over one of the missing edge segments with the
Because the primary culprit is often SketchUp's small-faces limitation, scaling your model up before running the plugin is the most effective solution.
[Attach image of the crack]
SketchUp uses a polygonal modeling engine. It struggles with microscopic geometry and complex vertex merges. When a rounding plugin fails to patch the top face cleanly, it is usually due to one of three common triggers. 1. The Scale Limitation (The Tiny Face Issue)
Most users searching for this term are looking for the popular RoundCorner extension by Fredo6 . This tool allows you to round the edges and corners of 3D shapes along a 2D profile.
This is the most common solution. If your top face is 10mm thick, do not use a 6mm rounding radius. The radius should never exceed half the thickness of the smallest adjacent face . sketchup round corner crack top
The extension is powerful, but it hates Ngons that aren't perfectly planar. If the crack persists, use to weld the perimeter after rounding.
Undo the fillet. Delete the internal guide line. Soften the top face edges. Re-apply Round Corner. Result: Perfect, crack-free top.
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. The strategy is to isolate the problem area,
What are you using (e.g., RoundCorner, FredoCorner, or native tools)?
SketchUp is a , not a "solid" or NURBS modeler like SolidWorks or AutoCAD. This means it represents all surfaces as a mesh of connected polygons (triangles and "ngons"—polygons with more than four sides). While powerful for architectural and design visualization, this polygon-based system has inherent limitations, especially when creating highly detailed, curved geometry.
The "top crack" issue in SketchUp's RoundCorner extension usually results from geometry scale, non-planar surfaces, or interrupted loops. Solutions include scaling the object up before rounding, manual face healing, or checking for hidden, problematic geometry. All the Ways to PATCH HOLES in SketchUp! [Attach image of the crack] SketchUp uses a