Stupid fink places bladed weapon (5,5)

I believe the answer is:

clasp knife

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

'stupid fink places' is the wordplay.
'stupid' indicates anagramming the letters (in a stupid order).
'fink'+'places'='finkplaces'
'finkplaces' is an anagram of 'CLASP-KNIFE'.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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