It is a sketchup architecture model, I have been repaired it and test on my 3DPrinter for a long time.
This is the bottom. If you love it, follow me and like me. I will upload the upper part for this model, and make more printable architecture model for you.
PS. Just add some infill 15% support, Layer 0.2-0.1mm,Print speed 50mm/s.
ARCH1bottom.stl | 265.6KB |