http://3d-kstudio.com/product/fusion/

 Fusion is a new 3ds Max plugin with a simple interface for the parametric modeling of repetitive geometries of varying complexity.  With Fusion, you can effortlessly create and modify such objects as stucco mouldings, fences, bridges, etc. Almost any geometry can be distributed along a path and/or fused together to create an intricate continuous stucco molding or any other complex object.  Fusion is a new 3ds Max plugin for parametric modeling of repetitive geometries of varying complexity.  With Fusion, you can effortlessly create and modify such objects as stucco mouldings, fences, bridges, etc. Almost any geometry can be distributed along a path and/or fused together to create an intricate continuous stucco moulding or any other complex object.  When the work is done, save your model blanks in the library so you can reuse them later in other projects.