A long time ago in a...I created this very simple little C3PO Head Antenna for some friends prop builds. It is in two parts, it does fit together straight from my printer but it will depend on your tolerances. I would add a dab of glue for strength.I have printed with and without supports - your choice, but personally liked the crisper edge of overhanging rings that supports provide.Remember that small parts tend to print better slower...

I will be uploaded some more free models - hopefully a little more exciting than this one.