Crossword Genius

Broken bones set — it's done conscientiously (4,4)

Ross

I believe the answer is:

ones best

'it's done conscientiously' is the definition.
(a conscientious person does their best)

'broken bones set' is the wordplay.
'broken' indicates anagramming the letters.
'bones'+'set'='bonesset'
'bonesset' with letters rearranged gives 'ONES BEST'.

I've seen this clue in The Guardian.
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