The case is just a modded version of the BAMF case from coyoto. I changed the "BAMF" font as well as you don't need to use a dremel or similar tool to smooth the interior after printing.
Just print and then you're ready to go!
The letters exist only at the outside, not on the inside anymore.
Thanks for the nice initial creation by coyoto and Prot0typ1cal!!
No supports needed if you turn the two parts in the way that the openings are on top when printing.