: The extension itself, which is now a paid tool ($15 perpetual license or part of a $50 bundle) but offers a 30-day free trial . 2. Core Tools & Functions
A: There is a free trial version that limits extrusion distance and adds a watermark. The full license costs ~$25 USD (one-time). Joint Push Pull Sketchup 2021
While there is no formal academic "paper" published in a scientific journal specifically titled "Joint Push Pull SketchUp 2021," the primary authoritative documentation for this extension is the Joint Push Pull User Manual authored by its creator, Official Documentation & Guides Joint Push Pull User Manual : This is the definitive technical guide provided by SketchUcation Joint Push Pull — SketchUp 2021 (detailed feature)