The lathe operator is an artist (6)
I believe the answer is:
turner
'artist' is the definition.
(painter JMW Turner)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for turner that I've seen before include "Painter of The Fighting Temeraire" , "Lathe worker; a water-colourist" , "revolutionary type?" , "craftsperson" , "Painter of seascapes" .)