If you have spent any significant amount of time modeling in SketchUp, you have likely encountered the dreaded "Entity is not a solid" error message. You’ve extruded your faces, grouped your geometry, and yet, when you try to use the or export for 3D printing, SketchUp refuses to cooperate. The culprit? Non-manifold geometry, stray edges, or internal faces.
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SketchUp models can often have hidden geometry errors. Solid Inspector 2 analyzes your groups or components and highlights these specific problems: Lines that do not form a face. If you have spent any significant amount of
If you’ve ever spent 20 minutes trying to figure out why SketchUp won’t let you click "Subtract" in the Solid Tools, you’ve met the invisible enemy: non-solid geometry . Non-manifold geometry, stray edges, or internal faces
To download and install Solid Inspector² use the built-in Extension Warehouse or download the RBZ file from the SketchUcation Plugin Store Extension Warehouse 1. Download & Installation Options Method A: Extension Warehouse (Easiest) Open SketchUp and navigate to the Extension Warehouse Search for "Solid Inspector²" (you must be signed in with a Google or Trimble account). Method B: Manual Installation (RBZ File) Download the file from the Solid Inspector² page on SketchUcation SketchUp Extension Warehouse In SketchUp, go to Window > Extension Manager Install Extension , select the downloaded file, and click Extension Warehouse 2. Compatibility & Requirements SketchUp Version: SketchUp 2014 or newer (compatible through current versions like SketchUp 2026). Older Versions: