Missing faces that prevent the shape from being airtight.

: Slicing software cannot process shapes with zero-thickness walls or internal holes. A non-solid model results in failed prints, missing layers, or chaotic toolpaths.

Once you have the RBZ file, use to load it manually.

If your SketchUp machine is offline or you prefer keeping backup plugin files, download the raw .rbz file.

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Small, microscopic gaps often happen when working at a tiny scale. Scale your model up by 100x or 1000x, run Solid Inspector², fix the errors, and scale it back down.

The Ultimate Guide to Solid Inspector² for SketchUp: Download, Install, and Fix Your 3D Models

: If you get a popup about a missing library, you forgot to install the TT_Lib² prerequisite mentioned above.

This is where by Thomas Thomassen (ThomThom) becomes an essential extension. It instantly analyzes your geometry, highlights errors visually, and fixes most of them with a single click.

SketchUp 2014 or newer (Older versions require the original Solid Inspector v1).

Troubleshooting Your 3D Designs: A Deep Dive into Solid Inspector² for SketchUp

is widely considered a "must-have" plugin for anyone using SketchUp for 3D printing or exporting to game engines (Unity/Unreal). It fills a massive gap in SketchUp’s native toolset: the ability to easily find and fix "holes" in geometry.

: Click the Fix or Fix All button for automated repairs (like reversed faces and stray edges).

If your design computer is offline or you prefer manual management, you can download the .rbz file.

So why do you need Solid Inspector 2? Here are just a few benefits of using this powerful extension: