Webster’s Revised Unabridged Dictionary · 1913
Fettling
Fet′tling (fĕt′tlĭng), n. 1. (Metal.) A mixture of ore, cinders, etc., used to line the hearth of a puddling furnace. [Eng.] [It is commonly called fix in the United States.]
2. (Pottery) The operation of shaving or smoothing the surface of undried clay ware.