Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
scalptor, ōris, m. [scalprum], a cutter, graver in metal or stone (cf. sculptor), Vell. 1, 17, 4; Plin. 20, 13, 51, § 134; 36, 6, 5, § 44; 37, 4, 15, § 60.