A very slight remix of the best Millenium Falcon model out there, modeled by Aaskedall—all I did was add in a blocky feature on the bottom with simple hole that you can use to mount it on a peg. It's designed to preserve the self-supporting qualities of the original so you should be able to print it sitting on its rear end (on a raft) with no other support structure on most printers.

The hole, and the model itself, are accurately scaled for the X-Wing Miniatures Game Large Ship stand and peg (although you could use it with any old peg that's roughly 6mm across and then narrows to 4mm.)