The file 'Portal Gun Base (out-dented Lettering) 3D Printer Model' is (stl) file type, size is 74.8KB.
I just used the original indented version and used meshmixer to raise the lettering so the i could pause the print and swap out the filament ( you can print it all out the same color if you want to and paint it)
aperture_base_outdented.stl | 297.5KB |