This paper concentrates on CAD/CAM for a special yet useful type of 3D cellular woven structure. Mathematical algorithms have been developed for the creation of weave diagrams and lifting plans for the design and manufacture of this type of 3D woven structure. The algorithms are implemented in a newly created CAD/CAM package which has proven to be useful. As an inportant aspect of the work, the NURBS technique is used for the visualisation of the structures. The advantages of NURBS include more controllable curves and surfaces and therefore more realistic images for woven structures.