New Power SubD-NURBS for 3ds max blends CAD NURBS with subdivision surface modeling

New nPower product allows 3D workflow to combine conceptual modeling with engineering.

A before-and-after image showing a sub-D model (left side) as converted to a NURBS-based model. Original image created in Luxology Modo. (Image courtesy nPower Software)

nPower Software has released a new product for converting Sub-D (subdivision surface) freeform 3D models into NURBS-based 3D models that can be used in CAD-based modeling. The product, Power SubD-NURBS, is a plug-in for Autodesk 3ds max.

Power SubD-NURBS can convert existing Sub-D models into a NURBS-based format for interface with CAD systems and CAD modeling operations. The software accurately interpolate the vertices of the original Sub-D mesh and has been tested for use with nPower’s Power NURBS (which provides NURBS modeling for 3ds Max).

Power SubD-NURBS sells for $295, and comes with 200 credits. nPower products can be purchased from the nPower web store (, or through certified nPower Software resellers throughout the world.

Power SubD-NURBS is based on IntegrityWare’s SOLIDS++ geometric modeling Kernel, a hybrid modeling system that supports Solids, Surface and Polygonal modeling. In addition, Power SubD-NURBS utilizes the new SubD-NURBS library product.

nPower customer James Oakley Fisher says, I have been playing with it for a few days now and it just made it possible for me to take an organic shape that I poly modeled and convert it into a NURBS model. Using the separate Power NURBS product I have been able to cut holes and project features into the model, all with beautiful filleted edges… It’s fantastic!”

What we think

NURBS-based modeling in 3D CAD is powerful, but lacks the ability to easily create organic, freeform shapes. Alternatives like Sub-D modeling can define shape precisely, but lack the rigor needed for engineering. There are product pushing the envelope in this space: Dassault Systemes’ Catia-branded Imagine & Shape and the T-Splines line of products come to mind. Until someone comes up with a perfect algorithm to replace both Sub-D and NURBS, there is room in the market for a product like Power SubD-NURBS that adds just the right point tool to improve an existing workflow.

Before-and-after images converted from Sub-D models created in Luxology Modo to NURBS-based models in Autodesk 3ds max. (Image courtesy nPower Software)