NX Realize Shape > Creating subdivision models > Choosing a primitive shape
Choosing a primitive shape
Use the Primitive Shape command to create the type of body you want to use as a starting point for NX Realize Shape modeling.
Choose one of six primitives that best matches the topology and edge continuity of the desired subdivision model.
Examples:
Sphere
Cylinder
Block
Circle
Rectangle
Torus
Design intent and downstream processes should also be taken into consideration:
Rounded edges in multiple directions? → Consider the Sphere primitive.
Rounded edges in two directions? → Consider the Cylinder primitive.
Few rounded edges? → Consider the Block primitive.
Need sheet faces? A trimming sheet? → Consider the Circle or Rectangle primitives.
Note: It is not critical to start with the most efficient primitive. NX Realize Shape is flexible enough to let you sharpen the cage edges of a sphere, or round the cage edges of a block, but knowing design intent will inform your choice of primitives and save you modeling time.
How do I
- Create a primitive block
Learn more
Primitive Shape
Control Cage
Look up more details
- Primitive Shape dialog box
Choosing a primitive shape, NX 2212 Series © 2023 Siemens
Source: https://docs.sw.siemens.com/en-US/product/209349590/doc/PL20220512394070742.xid851385/html/xid1123951/xid813837/xid1051534 · retrieved 2026-07-10