Mirroring a model usually involves decompiling it, actually flipping in your favorite model editor, and compiling back. I've written a tool that tries to automate the middle part of the process by crawling the SMD, no model editors involved. Usage screen, there's really nothing more to say: Source code can be found here. If you want to improve it, fix it, or compile it for your system, go ahead. I haven't compiled this under anything other than win7 x64, but there's nothing bizarre about it so it should work fine on different systems... Binary (single exe archived) attached.