About Us - Degating & Fettling Solutions- fettling grinding cutting ,About Us. Sri Vivegha Engineering Pvt Ltd., established in the year 1990, is a pioneer in Designing, Consulting and Manufacturing of Degating and Fettling Machines (ONLINE/OFFLINE) and …Casting - WikipediaFettling. Raw castings often contain irregularities caused by seams and imperfections in the molds, as well as access ports for pouring material into the molds. The process of cutting, grinding, shaving or sanding away these unwanted bits is called "fettling".