Shoddy stuff, breaking eggs to make revolution (6)
I believe the answer is:
rotate
'make revolution' is the definition.
'shoddy stuff breaking eggs' is the wordplay.
'shoddy stuff' becomes 'tat' (I've seen this before).
'breaking' is an insertion indicator.
'eggs' becomes 'roe' (I've seen this before).
'tat' inserted into 'roe' is 'ROTATE'.
'to' is the link.
(Other definitions for rotate that I've seen before include "Turn around an axle, swivel" , "Spin round" , "wheel" , "Spin as on axle" , "Go around" .)