About this 3D model
The original GYWindow_0927_010.stl is broken -- the cutouts in the window are broken, as clearly evidenced under Thingiview, Blender, TurboCAD and KISSlicer. Somehow, the mesh is really messed up. I imported the STL into TurboCAD and then used the vertices to regenerate a replacement window pane from scratch. Window pane and ghosts printed great with the Glow-In-The-Dark PLA that we sell at ToyBuilder Labs!