A military craftsman (shield-maker) in Homer, Iliad 7.220-1. His name may be a "speaking name," derived from his craft.
For the argument that the root verb referred to the accurate strokes of craftsmen hammering or chiseling surfaces such as bronze, gold, stone and ivory (perhaps leather) in the arts known today as chasing, sphyrelaton, engraving and relief sculpture see tau 375, nu 211 (citing the scholia to Theocritus, Idylls 1.28), tau 1148.