The Section-Plane tool is not yet fully implemented in the SketchUp Free version.
You COULD download your model [SKP] and if you download and install SketchUp v2017 Make, you can do the equivalent section-cut on that file - for now…
The Section-Plane tool is not yet fully implemented in the SketchUp Free version.
You COULD download your model [SKP] and if you download and install SketchUp v2017 Make, you can do the equivalent section-cut on that file - for now…