I got this to work but I had to tweak the API a little to do so
There's no point in trying to use Jade if you're trying to make armor OBJ models for 1.7.10, it does the same thing as the Forge OBJ loader, the only difference is that it's faster, never discards faces, and respects normal angles. The version on my github is a very early start to the 1.10.2 version iirc, I don't think I ever pushed a 1.7.10 version. Whatever happened, I'm pretty sure it's not in a fully functional state for either version. I haven't been working on anything MC or even Java related in a while, I'm off in C/C++ land at least until I finish the projects I'm working on atm.