Brazing mentioned in an Oscar-winning film

from No Country for Old Men:

Carson Wells: [Wells sits back and studies Moss] What do you do?
Llewelyn Moss: I'm retired.
Carson Wells: What did you do?
Llewelyn Moss: Welder.
Carson Wells: Acetylene? Mig? Tig?
Llewelyn Moss: Any of it. If it can be welded I can weld it.
Carson Wells: Cast iron?
Llewelyn Moss: Yeah.
Carson Wells: I don't mean braze.
Llewelyn Moss: I didn't say braze.
Carson Wells: Pot metal?
Llewelyn Moss: [annoyed] What did I say?