BoolTools 2 for SketchUp Make or Pro
BoolTools 2 is an update to the original BoolTools plugin which was released prior to the SketchUp Pro solid tools.
It is designed with 3D printing in mind to work with highly detailed small-scale models.
It also improves on many of the Solid Tools flaws by modifying the original geometry instead of creating new geometry with a different layer and name.
Available at mindsightstudios.com!