Make a copy of that component and scale it up by or 1000x . Run the RoundCorner plugin on the giant version.
When modeling in SketchUp, few things are as frustrating as using the extension only to have it "crack" or leave messy holes in your top faces. This usually happens when the geometry is too small or complex for the plugin to calculate cleanly.
Is this object an isolated , or is it connected to other loose geometry?
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SketchUp behaves differently than traditional Sub-D (Subdivision Surface) modelers. It uses a polygonal engine that relies on flat faces bounded by straight edges.
Because the primary culprit is SketchUp's absolute minimum facet size, scaling your model up before applying the round corner tool is the most reliable workaround. Select your object or component. Group it (). sketchup round corner crack top
If the top face is even slightly warped, the plugin cannot cleanly intersect the new rounded corner with the existing face.
Based on your request, it seems you are looking for a way to create a : an object (likely a table, countertop, or step) that has a rounded corner which is cracked or broken at the top edge .
Launch the RoundCorner plugin, select your edges, and drastically reduce the Offset value in the parameter window. If the offset is larger than the length of an adjacent edge, the geometry will break. 2. "Weld" Your Edges
If you are using the popular Fredo6 RoundCorner plugin, the crack often happens because the corner parameters are too complex for the given space.
Solving geometry tearing, missing faces, or visual "cracks" when using tools or plugins like RoundCorner Physical repairs: Make a copy of that component and scale it up by or 1000x
Ultimate Guide to Fixing SketchUp Round Corner Crack Top Issues
Close the giant component and delete it; the original-sized component will now have the geometry perfectly formed without cracks. 2. Manual Method (Native Tools) For those without plugins, use the tool to ensure clean geometry. Draw the Profile : Draw a small arc on the corner of your face. Select the Path : Select the top edges of your piece that you want rounded. Apply Follow Me : Click the
Always monitor the offset preview and edge segments before finalizing the operation. Lower the offset value and decrease the segment count slightly so the rounded edges have enough physical space to generate properly. Step-by-Step Guide: How to Properly Round Tabletop Corners
In some cases (like rounding a hole), the plugin may leave the original top face floating. Select and delete it to reveal the rounded geometry underneath. 4. Software & Extension Maintenance
The best cure is prevention. Here is your pre-flight checklist before using Round Corner on a top face. This usually happens when the geometry is too
Sometimes, tweaking the settings inside the RoundCorner/FredoCorner prompt bar prevents geometry collisions.
If plugins continue to crack the top face of a basic geometric shape, revert to SketchUp’s native tools, which handle simple paths cleanly.
This is the most reliable workflow for fixing micro-geometry issues in SketchUp. Because SketchUp cannot create tiny faces but can preserve them, scaling your model up temporarily solves the problem. Select your object. Turn it into a . Duplicate the component and move it to the side.
Ensure you have both the RoundCorner tool and its required library dependency, LibFredo6 , installed.