There are two methods to develop the device: thin-metal working or 3D-printing. This lesson describes the former. You can read-up lessons on the 3D-printing method here: https://d-lab.mit.edu/sites/default/files/CornSheller_BuildIt_Cast.pdf. This lesson will be completely based on pictures taken from https://d-lab.mit.edu/sites/default/files/CornSheller_DoIt.pdf, copyright D-lab and MIT. In class, we will find ways to improve or redesign the device.