Worked on expanding the modeling capabilities of the KittyCAD/modeling-app repository by implementing a bidirectional extrusion and revolution feature. This addition enabled users to perform symmetric or opposite-direction operations through new parameter options, enhancing the flexibility of CAD workflows. The work involved designing and coding the feature using JavaScript and Rust, with a focus on geometric computation and software engineering best practices. Comprehensive documentation and updated examples were provided to streamline onboarding and reduce the time required for users to interpret and apply the new functionality. The project demonstrated end-to-end delivery, from feature conception to implementation and user-facing documentation.