I start with a solid generated from a spline by revolved boss/base. The original revolved solid is shown at the top, then shown mirrored below, then deformed below that. The upper and (deformed) lower will be connected by a pure extrusion. So the deformed lower should be deformed only in Z=vertical, not in X or Y. When I use Deform curve-to-curve, according to the guide curves as shown, I get an approximately correct result. But in fact the resultant becomes deformed in X and Y as well. If I extrude from the top original curve, it fails to meet the profile of the bottom deformed body.
In principle this is a straightforward single-axis transformation. Simple math if I'm mathematically generating points in a point cloud. How do I tell Solidworks to morph this solid in a single dimension?