Files: import/fishhead.x3d : An X3D file created from a STEP file: This file was imported into NetFabb 2018 using the "Add Part" menu command export/fishhead.x3d : The result of exporting the imported part from Netfabb export/fishhead_with_nav_added.x3d : The export/fishhead.x3d with NavInfo and Viewpoints from import/fishhead.x3d pasted in.