New analytical formulations of bounded blending for functionally defined set-theoretic operations are proposed. The blending set operations re defined using R-functions and display cement functions with the localized area of influence. The shape and location of the blend is defined by control points on the surfaces of two solids or by an additional bounding solid. The proposed blending using a bounding solid can be applied to a single selected edge or vertex. We introduce new types of blends such as multiple blend with the disconnected bounding solid and a partial edge blend. It is shown to have versatile applications in interactive design.