An analytical force model is presented to simulate the cutting force and the chip flow direction in the drilling process. Three dimensional chip flow is interpreted as a piling up of the orthogonal cuttings in the planes containing the cutting velocities and the chip flow velocities. The chip flow direction is determined to minimize the cutting energy. https://www.ealisboa.com/best-buy-Freya-Viva-La-Fiesta-Plunge-Bikini-Top-Multi-great-buy/