Group

Groups all geometry that isn't in a group or component, the orange edges in Analyse. In SketchUp only groups and components can be solid, so this is usually the first repair.

Group: Organize
Fixes: Orange: ungrouped edges
Works on: Your selection, or the whole model if nothing is selected, including groups and components nested inside.
Version: Full

What it groups

Loose faces and edges: each connected piece becomes its own group.
Loose geometry inside a group that also holds other groups or components. That mix stops the outer group from being solid, so the loose part gets a group of its own.

How to use it

Run Analyse and look at the Ungrouped Edges (orange) counter.
Click Group.
Run the next repairs in order: red, green, then yellow.

Before and after

Analyse view of the table with orange ungrouped edges; the counter shows 792 ungrouped edges — **Before:** 792 ungrouped edges (orange).

The same view after Group: no orange edges; the counter shows 0 ungrouped edges — **After:** 0 ungrouped edges. The groups aren't solid yet, so their green and yellow edges now show up.

Limitations and intentional geometry

Loose geometry you keep on purpose at the top of the model, such as a ground plane, 2D details or a title block, would be grouped too. Select only the parts you want to print or weigh.
Grouping doesn't make anything solid by itself. It only makes it possible.

Check the result

The orange counter shows 0. Each piece now appears as a separate group in SketchUp's Outliner.