Draw the arc profile of your desired round corner on one edge of the geometry. Use the to clear out the sharp corner.

You apply RoundCorner, and instead of a smooth edge, the faces surrounding the edge disappear, leaving a hole or a "wireframe" mess.

Ensure your top surface is 100% flat and isolated before running the tool.

If the plugins keep producing cracks, you can achieve a rounded corner by manually drawing arcs on the top surface, using the to sweep them around, or, as a last resort, using bump maps in rendering software to simulate the edge, rather than modeling it.

Press M (Move) and hold Ctrl (Windows) or Option (Mac) to create a copy of the component. Drag it to the side.

If the crack is a physical gap:

The "SketchUp round corner crack top" is not a bug but rather a limitation of the software's tolerance for small, complex geometry. While it is frustrating, it is almost always fixable. for rescuing a broken model. If you are using a cracked or outdated version of the plugin, upgrading to the legitimate version via Sketchucation is the only way to ensure long-term stability and avoid these headaches.

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Select the copied component, press S (Scale), and pull a corner grip. Type 100 or 1000 and hit Enter to scale it up massively.

To create a piece with clean, un-cracked rounded corners, follow these methods: 1. The "Dave Method" (Scaling Up)

to simulate rounded edges without actually changing your 3D geometry. Further Exploration official SketchUp Guide

Activate the tool and click on the quarter-circle arc. SketchUp will smoothly sweep that arc around the entire tabletop edge, creating perfectly manifold, uncracked rounds. If you want, I can:

The most reliable way to fix these cracks is a workflow known in the community as the :

In this long-form guide, we will dissect why this crack appears, how to fix it instantly, and how to configure your plugins to prevent it from ever happening again.

The issue is a rite of passage. It signifies that you are pushing organic geometry inside a polygon-based engine. By understanding the "Ngon limitation" and adopting the Sandwich Workaround or adjusting your plugin segments, you can produce watertight, 3D-printable, and render-ready models.

Test the geometry. Fewer segments mean larger individual faces, which prevents SketchUp from dropping tiny polygons. Method 3: Clean the Top Surface Mesh

So the next time you see a crack appear, you won't be searching for help. You'll have your troubleshooting checklist ready: update your tools, scale up, disable Super Rounding, and then sculpt your model to perfection. Happy modeling!

When a crack appears on a complex curved surface that the other methods can't patch, it's time to bring in a specialist. Fredo6's plugin is the ultimate tool for repairing and rebuilding advanced curved geometry.

Delete the giant copy; the original-sized component will now have the perfectly healed, rounded geometry. Increase Segment Count