Featured Image: D-Lab, Sheet Metal Corn Sheller (El Salvador, 2002–present). Photo: MIT D-Lab Children in a Salvadoran village shell corn with sheet metal corn shellers made by community members during a D-Lab workshop in 2011. D-Lab teaches communities around the world to construct this simple hand-hand sheller using a jig design by D-Lab, and supports people in coming up with their own variations of the sheller.