Created in OnShape, a free, browser-based, SolidWorks-like CAD package. OnShape adds functionality to have multiple concurrent editors, shared variables, a freeform part studio for sharing sketches between parts.
Based on the Part Breakdown System (PBS) presented by Wintergatan
https://www.youtube.com/watch?v=zVyEsMiwvVc
https://docs.google.com/spreadsheets/d/1eKW_-ygHTu2z4inSSGPFnjAoIolORW19d-Xu-uhDw9E/edit?usp=sharing
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My version is here: ‣
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