The geospatial model used in the example was a city model with a open mesh terrain, and several simple, mesh buildings. There were some gaps in the terrian and buildings, along with many inconsistent normals. Some of the buildings were also missing facets, or were unconnected to the ground.
Below is a picture of the original mesh model with annotations describing some of the main changes that needed to be made along with the tools used.
A) Inconsistent normals can cause several errors such as holes and missing elements when printing. The Change Mesh Normal tool can be used to unite or reverse the normals of a single mesh element.
B) Terrain is often an open mesh element with no volume. The mesh needs to be made into a closed volume to be printed. The Create Base tool works very well to do this.
C) Buildings may have missing facets or small gaps between walls. The Fill Mesh VOids tool works well for small gaps within an element, while larger gaps or missing facets are usually easier to fix by using the Place Shape tool to fill the space.
D) It is important that the buildings and other elements are anchored to the ground to print as one piece. The building volumes and the terrain volume must be in contact or intersecting to ensure that there are no unconnected elements.