Crossword Genius

Old printer component idle say, when not quite turning? (5,5)

Ross

I believe the answer is:

daisy wheel

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'old printer component' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe you can see a link between them that I don't see?

'idle say when not quite turning?' is the subsidiary indication.
'not quite' means to remove the last letter.
'turning?' is an anagram indicator.
'idle'+'say'+'when'='idlesaywhen'
'idlesaywhen' with its last letter removed is 'idlesaywhe'.
'idlesaywhe' with letters rearranged gives 'daisywheel'.

Can you help me to learn more?

(Another definition for daisy wheel that I've seen is " printing disc".)

I've seen this clue in The Guardian.
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