This is the second prototype of the COSMIC-2 Radio Occultation antenna array.  It is fabricated out of 3D printed FDM Ultem 9085
<a href="//commons.wikimedia.org/wiki/User:Dturbiner" title="User:Dturbiner">Dmitry Turbiner</a>
<span class="int-own-work" lang="en">Own work</span>