Crossword Genius

Spooner said "fire inexperienced tool!" (4,3)

Ross

I believe the answer is:

rack saw

'spooner said fire inexperienced' is the definition.
I know nothing about this answer so I cannot judge whether this works.

'tool' is the wordplay.
I cannot quite understand how this works, but
'tool' could be 'saw' (saw is a kind of tool) and 'saw' is located in the answer.
The remaining letters 'rack' is a valid word which might be clued in a way I don't see.
This may be the basis of clue (or it may be nonsense).

I've seen this clue in The Independent.
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