The silicon is grown in a process that produces long cylinders that are then sliced into wafers. Silicon is not molded, cast or extruded, so the shape is result

The silicon is grown in a process that produces long cylinders that are then sliced into wafers. Silicon is not molded, cast or extruded, so the shape is result of the growing process. https://en.m.wikipedia.org/wiki/Czochralski_method https://en.m.wikipedia.org/wiki/Czochralski_method