1. A method for producing a physical dental arch model based on a three-dimensional (3D) digital dental arch model, comprising: smoothening the digital dental arch model to make the digital dental arch model suitable for CNC based manufacturing; segmenting the digital dental arch model into at least two manufacturable digital components; producing manufacturable physical components using Computer Numerical Control (CNC) based manufacturing in accordance with the manufacturable digital components; and assembling the manufacturable physical components to form the physical dental arch model.