Damn, too slow again, but anyway:
Well, 3d-printing depends on solid, "watertight" models.
The model in your file is the exact opposite... 😛
It consists of 114 separate (mostly overlapping) shells with paper thin walls, it's not usable for any manufacturing method that i'm aware of.
I'm not an expert and i don't know your modeling software, but there are tutorials for nearly everything out there nowadays...
All i know is: you need to create a solid, watertight model without intersecting faces, without internal structures and so on....
And as a rule of thum