A
yet-unfinished droid, C-3PO is being built piece by piece on Tatooine, with
parts taken from a variety of sources. Although constructed from used and
reconditioned materials, C-3PO is meticulously assembled, following the structure
of a standard Cybot Galactica protocol droid model as closely as possible.
Most of the necessary parts are bought or traded for in junk shops on Tatooine,
while some of the elusive pieces have to be built from scratch. Special requests
to a star trader, or even a smuggler, occasionally
help to obtain the more complex components.