Italian artist's belt -- coil it for sculpting (10)
I believe the answer is:
botticelli
'italian artist's' is the definition.
(Sandro Botticelli)
'belt coil it for sculpting' is the wordplay.
'for sculpting' indicates anagramming the letters.
'belt'+'coil'+'it'='beltcoilit'
'beltcoilit' anagrammed gives 'BOTTICELLI'.
(Other definitions for botticelli that I've seen before include "who painted?" , "Famous Italian" , "Italian painter, 1445-1510" , "Florentine C fifteen-sixteen artist (Primavera)" , "Italian painter of The Birth of Venus, d. 1510" .)