Analyse

Analyse shows every problem in your model at once, as coloured edges and a counter for each kind of problem. Each colour matches a repair tool.

Group: Inspect
Works on: Your selection, or the whole model if nothing is selected, including groups and components nested inside.
Changes the model?: No. It only draws on screen: solids in see-through magenta, problems as coloured edges. (If Hide Solids is on, solids are hidden so the rest is easier to see.)
Version: Free and full. The Analyse Report's Fix buttons need the full version.

How to use it

Click Analyse on the SuSolid toolbar, or choose Extensions › SuSolid › Analyse.
Read the counter in the top-left corner of the SketchUp window: the number of solids, then one line per colour.
Pick the repair tool for each colour (table below). Fix orange, red, green and yellow first, in that order: those four stop a group from being solid.
After each repair the Analyse view comes back by itself, so you can see what is left.
For a list instead of colours, use the Analyse Report.
To leave Analyse, choose another tool, for example Select (Space).

What the colours mean

Analyse colours
Colour	Counter in SketchUp	What it means	Stops a solid?	Fix with
Magenta	Solids	Groups and components that are already solid, filled in see-through magenta. Not a problem.	No	Nothing to fix
Black, dashed	Not Solid	A box around each group or component that isn't solid, so small ones are easy to find.	Yes	The colours inside it
Orange	Ungrouped Edges	Geometry that isn't in a group or component, or sits next to a group at the same level.	Yes	Group
Red	Edges with no faces	Single edges that don't belong to any face.	Yes	Delete Single Edges
Green	Edges with 1 face	Open edges: the border of a hole or of an open surface.	Yes	Close Holes
Yellow	Edges with 3 or more faces	Internal or extra faces: more than two faces meet at one edge.	Yes	Delete Inside or Divide
Blue	Edges of Coplanar faces	Edges between two faces that lie in the same plane.	No	Delete Coplanar (optional)
Brown	Edges of Distorted Faces	Faces whose corners are not all in one plane.	No	Repair Distorted Faces (optional)
Cyan	Edges of Reversed Faces	Faces of a solid that point inwards.	No, but some slicers need it fixed	Flip Reversed Faces
Purple	Flat Groups	Groups with no thickness: every face lies in one plane, like the 2D people in SketchUp's templates. The repair tools leave them alone.	Yes	SketchUp's Push/Pull, if the part should be solid
Olive squares	Short Edges	Edges shorter than 1 mm (you can change this in Analyse Filter), too short to see. SketchUp can fail to make faces on them.	No, but repairs there can fail	If a repair leaves holes there: scale up, repair, scale back

Before and after

A table and four chairs in SketchUp with no SuSolid colours — **Before:** the model as downloaded from 3D Warehouse.

The same model in the Analyse view: orange edges everywhere, and a counter showing 0 solids, 792 orange, 16 red, 480 green and 128 yellow edges — **After Analyse:** 0 solids; 792 orange, 16 red, 480 green and 128 yellow edges. The worked example repairs it step by step.

Animation of the whole repair of the table and chairs, from Analyse to Balance — The whole repair as an animation.

Limitations and intentional geometry

Blue and brown edges don't stop a group from being solid. If you want to ignore them, turn them off in Analyse Filter (full version).
Geometry that isn't meant to be solid, such as terrain or an open surface, always shows green edges, and flat drawings show purple. Select only the parts you want to be solid before running Analyse, or ignore those parts.
Reversed faces (cyan) are only checked in solids.
Very large models take a while; SuSolid is working even when SketchUp looks busy.

Check the result

When the orange, red, green and yellow counters are all 0, every group is solid and shows magenta. You can confirm a single part in SketchUp's Entity Info window: a solid shows as Solid Group or Solid Component, with its volume.

Analyse Report

Extensions › SuSolid › Analyse Report opens a window that lists each group that isn't solid (and each solid with reversed or distorted faces), with what is wrong with it in the same colours.

Show zooms to the group and selects it.
Fix runs the repairs that group needs, in the right order: stray edges, internal faces, coplanar edges, holes, distorted faces, then face direction. One Undo takes them all back. Fix All does this for every group in the list (full version). It turns the table and chairs from the worked example into solids in one click.
Flat groups get a tip instead of a Fix button: use Push/Pull to give them thickness.
Refresh analyses again, for example after you've used Push/Pull.

The report covers your selection, or the whole model if nothing is selected, and it keeps that while it is open.