Shingling /(?)/

Shin·gling

Shingling

n.
  1. The act of covering with shingles; shingles, collectively; a covering made of shingles.
  2. The process of expelling scoriae and other impurities by hammering and squeezing, in the production of wrought iron. (Metal)

Phrases & Compounds
Shingling hammer
a ponderous hammer moved by machinery, used in shingling puddled iron.
Shingling mill
a mill or forge where puddled iron is shingled.