If your rounding radius is larger than the space available on a face, the tool will "overflow" into adjacent segments, causing geometry to overlap or fail.

SketchUp has an internal precision limit of approximately . When rounding a corner with a small radius or high segment count, the plugin may generate edges so short that SketchUp automatically "cleans them up" by deleting them, which creates a hole or crack. The Fix: The "Dave Method" (Scaling) Create a Component : Turn the object into a component.

Whether you are using native tools or popular extensions like Fredo6's RoundCorner or FredoCorner , here is how to identify and fix these geometry failures. 1. The Main Culprit: Small Face/Edge Tolerance

: Ensure your offset is relevant to the model's dimensions.

: Run your rounding tool on the giant version. Because the geometry is large, SketchUp can successfully create all the tiny segments.

Sometimes cracks appear because you haven't selected all the necessary boundary edges. All the Ways to PATCH HOLES in SketchUp!

: Make a copy of that component and scale it up by 100x or 1000x .

: Once finished, close the component and delete the large copy. The original small version will now contain the perfectly rounded geometry without cracks. 2. Radius Overlap and "Overflow"

Fixing the "SketchUp Round Corner Crack" Issue: A Complete Guide

One of the most frustrating moments in SketchUp modeling is when you apply a rounding effect to a sharp edge, only to find visible gaps, holes, or "cracks" in the resulting geometry. This issue, often referred to as a , typically occurs because SketchUp struggles with very small edges or complex intersections.