ADJ.
local
VERB + MACHINIST
isn't, worked
MACHINIST + NOUN
factory
PREP.
in, on
noun
A constructor of machines and engines; someone knowledgeable about machines.
A person skilled in the use of machine tools for fashioning metal parts or tools out of metal.
A person who operates machinery.
A person employed to shift scenery in a theater.
noun — a craftsman skilled in operating machine tools
Soon after graduating from trade school, Ray Murphy was taken on as a machinist at the local automobile plant.
Tom is a machinist.
Sami worked as a machinist in a factory.
Tom isn't a machinist.