noun
wirework; wire craft
Refers to objects or artwork made by bending and shaping wire, such as ornaments, sculptures, or practical items.
彼は針金細工で小さな動物を作るのが得意だ。
He is good at making small animals out of wirework.
針金 means 'wire' as a material, while 針金細工 refers to the craft or finished wirework item.
Compound of 針金 (はりがね, 'wire') and 細工 (ざいく, 'craft, workmanship'). The reading ざいく is a rendaku form of さいく.