Abstract: A Groundnut decorticator was developed using locally available materials. This machine consists of a hopper, a 450mmm diameter cylindrical stripping chamber, a chute and a 75 x75mm wooden frame. The stripping chamber houses two serrated disc fixed at an experimentally determined space of 1.15cm. One disc is fixed (static) on the chamber inner wall while the second and the mobile disc is mounted on a flange attached to the power shaft. The flange carrying the mobile disc at the point of attachment to the driving shaft has an adjustable groove to vary the space between both discs. The evaluation results show that optimal shelling efficiency of 95% and 92% unbroken kernel were achieved when operated at 50% metering device opening at a shaft speed of 240rpm and throughput capacity of 782.61kg/hr. The best result was obtained in the course of the experiment at 10% moisture content (wet bases) of the product.