j-head bracket with servo mount 3mm and 1/4th inch coupling

I liked Biomushroom's j-head design with bracket, so i re-worked it with a 3mm filament hole and adjusted the pnumatic coupling hole to work with a 1/4th inch coupling. I used indieflow's scad files to create the base model, and i attached biomuchroom's mount. i removed the supports (the ones biomushroom made were nice and worked well, but i feel safer using supports made by a slicing program) and made them a little bit simplier.

I also added a modified version of the main part of indieflow's