First open the ‘Load & Save 3D model’ menu.
Save 3D model will save a 3DPX file of the current painting project to the local hard drive. The file contains the color information and some application specific computations like fill region and subdivisions.
Export 3D model will save the OBJ model file with color information only. This includes any changes to the physical model such as remeshing.
Load 3D model will open a dialog to select a model from the local drive. Supported files are STL, OBJ, and 3DPX.
Repair & Remesh runs a process to correct the model in the case that it has defects like non-manifold edges.