Crossword Genius

Vehicle engine cover half made of such steel? (6)

Ross

I believe the answer is:

carbon

'such steel?' is the definition.
(carbon steel is a type of steel)

'vehicle engine cover half' is the wordplay.
'vehicle' becomes 'car' (car is a kind of vehicle).
'engine cover' becomes 'bonnet' (I've seen this before).
'half' indicates taking half.
'bonnet' cut in half is 'bon'.
'car'+'bon'='CARBON'

'made of' acts as a link.

(Other definitions for carbon that I've seen before include "sort of copy" , "C (with a footprint)" , "Chemical element occurring in pure form in diamonds and graphite" , "Chemical element occurring in pure form in diamond" , "Element of which diamonds are formed" .)

I've seen this clue in The Guardian.
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