Go to the [b]MENU[/b] (3 horizontal bars upper left corner). Go to [b]SAVE[/b]. Title it [b]Cup Model 3[/b]. Open this in GeoGebra 3D Calculator on you phone or tablet to test how well the virtual model fits over the real one. [br][br]If you forget how to do this, do the following: [br][list][*]Sign in to your GeoGebra account on Safari if you have an iPhone or iPad[/*][*]Sign in to your GeoGebra account on Chrome if you have an Android or other non-iOS tablet. [/*][*][url=https://youtu.be/_gjrdrqADZM?t=142]Follow the instructions seen here[/url]. (No need to watch the beginning of the video.)[/*][/list]