Share 'Phyllomachine | joining all meshes'

Hi ! The goal of this script was to 3D print this pine cone, however to do so I needed to join all meshes together and make one unique sealed mesh... Something which I didn't succed. I tryied meshbooleanunion in rhino without succes, I also tryied meshrepair.... So I figured out maybe the best solution was to solution it in grasshopper... but it looked impossible to me :\. Anyone can help ?  th…