Thanks for the help on this Cerbera! I ended up using a dynamics solution with a flat extruded shape using a really rough version of the spline needed. With a plane as collider underneath I could then just let this fall down and kinda shrink wrap around the cogs, quickly giving a perfect shape. Then I just made it editable and Edge to splined it and all done. A pretty convoluted solution but probably slightly more exact and made iterations less painful 🙂
