This is a Cobra MK III spaceship printable model.
This model is based on other one that was uploaded for 3DPVDB user and was optimised for the slicing task.
Thanks to GeoBill his stl files.
The best results I've got with Slic3r software.
If you thinking of the resoult is not the best using a full model, you can use a two parts version (cobra MK III ship, cobra MK III Engine) and paste after print.