Took a swing at this myself, please see: https://www.blockscad3d.com/community/projects/1814083 https://www.blockscad3d.com/community/projects/1814083 which i

Took a swing at this myself, please see: https://www.blockscad3d.com/community/projects/1814083 https://www.blockscad3d.com/community/projects/1814083 which is mostly parametric --- only the placement of the rounding of the last radius is hard-coded/fudged.