I'm copying the inflate attachment that Cabrinha uses for their inflate system but the only difference is Flysurfer uses a bigger thread. See the Cabrinha attachment that someone modeled here.http://www.thingiverse.com/thing:246750 Reference http://www.thingiverse.com/thing:246750 for the air pump attachment. I used this scad template for my screw/nut threads http://www.thingiverse.com/thing:8796 I've included the scad library file from above. I know the pump attachment works and I know the threads fit the kite. I just need to connect the two as I started in the blend file.