If you have ever tried to extrude a curved surface or add thickness to a complex organic shape in SketchUp, you know the frustration. The native "Push/Pull" tool is brilliant—until you hit a curved wall, a dome, or a mesh imported from another 3D software. That is where the magic happens. In this guide, we dive deep into the most sought-after extension for 3D modelers: the Joint Push Pull Plugin SketchUp 2021 Free Download . What is the Joint Push Pull Plugin? Developed by Fredo6, one of the most legendary scriptwriters in the SketchUp community, Joint Push Pull (JPP) is a revolutionary extension that allows you to push and pull multiple faces simultaneously, including curved surfaces. Unlike the native tool, JPP can generate thickness on double-curved surfaces, offset edges, and create shells with a single click.