The plugin is widely available and typically offered as a free (sometimes time-limited) demo on the SketchUp Extension Warehouse . Soap Skin & Bubble - SketchUp Extension Warehouse
Architects and designers use this extension for various specialized modeling tasks: sketchup soap bubble
She knew how to draw lines and push/pull squares, but how do you model a sphere that melts into another sphere without hard, angular edges? The plugin is widely available and typically offered
She found (a classic SketchUp plugin).
It looked wrong. Where the two bubbles met, she had two distinct skins overlapping. A real soap bubble doesn't overlap; it merges. It creates a shared wall (a septum) at a specific 120-degree angle. sketchup soap bubble