Untitled Document. Modifying a TIN The TIN is created as a grouped object so you will need to double-click on the TIN to open the group for editing.
Go to View > Hidden geometry to turn on the lines that form the boundaries of the traingular surfaces of the TIN. This hidden geometry of points, lines and surfaces is what you will use to further manipulate the TIN. Although manipulating the TIN is not a very elegant process, there are a few tools available to edit the TIN: You can use the standard Move tool to push and pull the points, lines, and surfaces of the TIN, Index page. Google SketchUp 3D Rendering Tutorials SketchUpArtists.