With the plugin installed, Maya selected her wavy roof surface. She clicked the icon (a blue arrow pushing a curved face). She chose Normal mode, typed 6 inches (the thickness of concrete), and clicked.
She learned that Joint Push Pull (JPP) is a legendary extension created by Fredo6, a famous SketchUp plugin developer. Unlike the standard tool, JPP doesn't just push flat rectangles. It can push any face—curved, bumpy, vertical, or twisted—outward or inward to create a solid, real-world thickness.
Every time she clicked on a curved face, SketchUp gave her the same error: “Cannot extrude curved or triangulated surfaces.” Her beautifully wavy roof remained a flat, useless shell. --- Joint Push Pull Sketchup Plugin Download
She added walls, windows, and a foundation. Her museum looked professional, realistic, and ready for 3D printing or rendering.
She had drawn the complex shape using organic curves and imported topography. But when she tried to give it thickness—to turn her paper-thin surface into a real 3D slab of concrete—SketchUp’s standard tool refused to work. With the plugin installed, Maya selected her wavy
Pop.
The Flat Roof That Needed Curves
The first results were sketchy forum links and YouTube videos with robotic voices. Then she saw a name repeated over and over: .