Everything ready to forge glossy metals (3,7,2)
I believe the answer is:
all systems go
'everything ready' is the definition.
'forge glossy metals' is the wordplay.
'forge' indicates anagramming the letters (I've seen 'forged' mean this).
'glossy'+'metals'='glossymetals'
'glossymetals' is an anagram of 'ALL SYSTEMS GO'.
'to' acts as a link.
(Other definitions for all systems go that I've seen before include "Everything functioning correctly" , "Nothing's stopped" , "Fully prepared to start" , "Everything is working" , "Ready for lift-off!" .)