Bug-infested support mechanism using office equipment (8)

I believe the answer is:

stapling

'using office equipment' is the definition.
(using a stapler)

'bug-infested support mechanism' is the wordplay.
'bug' becomes 'tap' (synonyms).
'infested' is an insertion indicator (some letters are infested with others).
'support mechanism' becomes 'sling' (a sling supports a broken limb).
'tap' placed into 'sling' is 'STAPLING'.

I've seen this clue in The Times.

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