Recently. incremental sheet metal forming (ISMF) process as one of the new methods in rapid prototyping collection has been considered by researchers. This process is based on a defined path in CNC controller and applies a spherical-head tool that supplies the required pressure for sheet metal forming. Despite affirmation of process ability in forming symmetric geometries. https://www.roneverhart.com/Capsule-Hats-South-Park-Collection-Cartman-Red-Brim-59Fifty-Fitted-Hat/