This is a revision of ModelStation's Space Shuttle model, with most of the major components fixed to be properly manifold and normals corrected (according to both Blender and Slic3r) where needed. I also took the time to un-triangulate much of the models' faces for the sake of easier editing later, if necessary.

I kept everything as close to the upstream model's dimensions and shapes as possible (which is to say, no more than a few hundredths of a millimeter difference). It's not a re-draw, rather it consisted mostly of deleting faces and dissolving-out edges and vertexes and re-creating them a little at a time (so that I always have multiple original vertexes to model against).

The "mid" section of the Orbiter is unchanged from the original.

Also, I've included the Blender work files I created during the revision, and a plated .amf.xml of the Orbiter and its Boosters since they're all printed in the same color anyway.

Print instructions

Licence: Creative Commons - Attribution Category: Vehicles Print Settings

Printer Brand: RepRap

Printer: Prusa i3

Rafts: No

Supports: No

Resolution: 0.2mm

Infill: 15%

Notes:

I used Micro Center's "Inland" PLA in white, orange, silver-grey, and black. Didn't print the base with settings as strong as recommended by the original post, but that's okay - if it breaks, that's what superglue is for. :-)