A product configurator is developed as an add-in for the SolidWorks CAD software. The focus of the project is on economical individual production with batch size 1 for the consumer goods sector. This project demonstrates the possibilities and advantages of an add-in. Only with the help of an add-in can the advantages of an established CAD system be fully exploited and at the same time the high costs for stand-alone software development be saved. A detailed video of the add-in can be found at here or on our YouTube channel.