Machine in bottling factory? Fine example! (6)
I believe the answer is:
corker
I believe this is a double definition.
'machine in bottling factory?' is the first definition.
(machine for corking bottles)
'fine example' is the second definition.
(a corker is a fine example of something)
(Other definitions for corker that I've seen before include "Special one" , "smashing one" , "Bottle-stopper for excellent person" , "beauty" , "One bottling wine" .)