For each artist successively putting final pieces of painting inside steel drawer (9,6)

'steel drawer' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

'for each artist successively putting final pieces of painting' is the wordplay.
I cannot quite understand how this works, but
'each' could be 'per' ('per' can mean for each) and 'per' is located in the answer.
'final' could be 'net' (synonyms) and 'net' is found in the answer.
This may be the basis of the clue (or it may be nonsense).

'inside' acts as a link.

Can you help me to learn more?