How do you convert to solid in SketchUp?
For SketchUp to realize something is a solid, you have to make it into either a group or a component first. Another thing: Solid groups and components can’t have other groups and/or components nested inside them. Making a solid doesn’t require any special tools.
How do I edit a component in SketchUp?
Editing all instances of a component
To open the context, you can double-click the component. Or select it, context-click the selection, and choose Edit Component, or simply hit Enter. Use the SketchUp drawing tools to edit your component.