Finding other bits of the metal bar (5)
I believe the answer is:
ingot
'the metal bar' is the definition.
('ingot' can be a synonym of 'metal bar')
'finding other bits' is the wordplay.
'bits' indicates the answer is hidden within the clue (I've seen 'bit of' mean this).
'INGOT' is hidden in the letters of 'finding other'.
'of' acts as a link.
(Other definitions for ingot that I've seen before include "Brick-shaped lump of cast metal" , "Cast metal brick" , "Pig" , "Bar of cast metal" , "Bar of bullion, for example" .)