If only a single face is missing, you can often fix it by: Turning on Hidden Geometry (View > Hidden Geometry).
: Sometimes the geometry is actually there, but the edges aren't "softened" or "smoothed," making the curve look like a series of broken, faceted cracks rather than a continuous surface. Solutions and Best Practices sketchup round corner crack
SketchUp has difficulty creating very tiny faces (under roughly 1/16th of an inch). When you use an extension like on a small object, the resulting arcs generate tiny segments that the software cannot bridge, leading to visible gaps or "cracks" in the mesh. Common Causes If only a single face is missing, you
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