Tannins and human health: a review. Chung KT, Wong TY, Wei CI, Huang YW, Lin Y. Department of Microbiology and Molecular Cell Sciences, University of Memphis, TN 38152, USA. Tannins (commonly referred to as tannic acid) are water-soluble polyphenols that are present in many plant foods.
How to Cast Jewelry. Jewelry casting is a process of making jewelry pieces that involves the pouring of liquid metal alloy into a mold. It is usually referred to as lost-wax casting because the casting mold is created using a wax model that is melted away to leave a hollow chamber in the middle of the mold.
Terms and definitions for castings and foundries. Casting: Manufacturing process where molten metal is poured into a mold and allowed to cool and solidify. Casting is a versatile process that offers exceptional freedom in forming intricate components. It is also conducive to high-volume production runs, where material quantities can be efficiently controlled to minimize waste and reduce cost. The casting process is also called founding. Casting can refer to the solid product of the casting process. Foundry: Facility that produces metal castings and offers related services such as mold-making, melting, pouring, degating, heat treating, surface cleaning and other finishing operations.