Aholiab... an engraver. — This is a mistranslation. Khârâsh means a worker in any material whatsoever. It should be rendered artificer, as it is in 1 Chronicles 29:5; 2 Chronicles 34:11.
A cunning workman. — Literally, a deviser; but the root is used especially of the devising of textile fabrics. (See Exodus 26:1; Exodus 26:31; Exodus 28:6; Exodus 28:15; Exodus 36:8; Exodus 36:35; Exodus 39:3, &c.)