Cap is manufactured thus for artist (7)
I believe the answer is:
picasso
'for artist' is the definition.
(Picasso is an example)
'cap is manufactured thus' is the wordplay.
'manufactured' indicates anagramming the letters.
'thus' becomes 'so' (synonyms).
'cap'+'is'='capis'
'capis' anagrammed gives 'picas'.
'picas'+'so'='PICASSO'
(Other definitions for picasso that I've seen before include "Cubist artist" , "Pablo -, Spanish painter/sculptor" , "As cop is a Spanish painter" , "Spanish artist who emigrated to France, d. 1973" , "So aspic is out for the Spanish artist" .)