Stained Glass lead cement Putty Black - 1/2 pint (1LB): A pre-darkened putty designed specifically for the stained glass trade. Use with zinc, lead, brass or copper came. Whiting Powder(1 lb) Whiting powdered cleaning agent removes excess flux, oil, cement, and other residue from stained glass projects. Cleans up and absorbs putty from leaded glass panels.