Complex C2 Scoop: The surface is created with two sketches in direction 1, and one sketch in direction 2. The sketches in direction 1 are pierced to the sketch on the right plane that becomes direction 2. The outside sketch partial elipse will be used to trim the main surface, and the inner partial elipse will be used to trim the bottom of the scoop. The surface is split to allow a new sketch to be made C2(curvature continuous) via the equal curvature relation. Note that the short edges between the two blends are not used for the surface. Adding these to the feature creates undulations in the surface that are not acceptable. However, the edges will lay on each other due to the constraints already used. If there are any extremely small gaps, the Surface Knit will fix these.
Download: Complex C2 Scoop
Features: Boundary Surface, Scoop Layout, Split Line, Complete Blend
DraftSight Download: In conjunction with DraftSight, Dassault Systèmes’ 2D CAD product, the 2D drawing(.dwg) file of the Complex C2 Scoop tutorial is now available for download here.