SuSolid is a fusion of 4 plugins related to Solid entities of Google SketchUp:
On the picture sequence on the right you can see how quick you can make this model to be composed by 49 solid entities. Just try to do it manually and you will see how much time the SuSolid plugin can save you.
You don't need to inspect the mistakes closely, just follow the edge colors and select the appropriate tool for that mistake.
Mostly the best tool selection order is like on the mistakes counter (orange,red,green,yellow).
Next,you can find the intersection mistakes,that can be very expensive if you are designing for production.
And finally you can predict the weight of the product in the designing stage.