Everything in factory? (3,5)
I believe the answer is:
the works
This clue is a double definition.
'everything' is the first definition.
(I've seen this before)
'factory?' is the second definition.
(I've seen this before)
'in' is the link.
(Other definitions for the works that I've seen before include "Comprehensive treatment" , "factory?" , "plant?" , "(Give it) everything" .)