A novel interchangeable spin chuck system is provided that allows the user to quickly change substrate sizes and spin chuck styles without any extra tools. This system has a two-piece design and overcomes many of the drawbacks of previous spin chuck designs, such as difficulty in seating the spin chuck and ensuring that the spin chuck is at a consistent flatness and height. Furthermore, this spin chuck system allows the spin chucks to be manufactured at a lower cost. Thus, rather than restricting users to “make do” with incorrect spin chucks due to budget limitations, this economical design gives users access to a wider range of spin chuck sizes and styles.