« on: August 29, 2014, 07:09:45 PM »
For now this is just a visualization tool, it doesn't do anything else yet. If your mesh is very small, or has lots of thin areas, then it will show you lots of highlights ("balloons"). Basically the idea is to identify areas that are too thin to 3D-print.
I would be curious to see a screenshot of your model, and know its dimensions...perhaps you have found a bug.
When you click one, it should select that area. You can manually thicken it in various ways, for example by using the Offset tool with smooth transition.
(We will improve this tool in the future, so that there is a one-click thickness repair...)