SO I started a new 0-4-0 (loosely) based on the PRR A5S. creating every object as an .STL valid closed surface, until the firebox. OUCH. firebox is hard work because i forgot I was targeting 3d print, and tried to model a fully functional firebox. Then i sent the file to Studio, to test the components. Huge problem because the wheels are copies of a group, so there were multiple naming conflicts...so you know, set them all as props, fix the materials and Render! not at all disappointed with the results at this time. The firebox is super gross with its sharp corners, and the throat should not be segmented, but W.ork I.n P.rogress!