I recently obtained an STL file from a web site that has 3D print files for model railroading. The file
won’t print, even with supports, as it is a single entity composed of 310 objects, most of them are
floating in mid air. I tried to ‘split’ the file into objects, but can’t figure out how to group them and/or
place them onto the plate so they’ll print.
Any insist would be greatly appreciated.