NX Convergent Bodies are Created in NX12 (and Later) Instead of Solid Bodies.

Convergent Bodies are Created in NX12 (and Later) Instead of Solid Bodies.

Solution

A change was done in NX12 which added an option called "Treat Degree 1 Spline as Polyline".


It is present for customers NX sessions in; 'File -> Utilities -> Customer Defaults -> Modeling -> General -> Convergent -> Treat Degree 1 Spline as Polyline'.



Or interactively in single files at; 'File -> Preference -> Modeling Preferences -> Convergent -> Treat Degree 1 Spline as Polyline'.



When toggled ON (the default), this option for Extrude will create a convergent body, and when toggled OFF. extrude will create a solid body. Once an extruded body is generated as a convergent body and then turning off the parameter, the extrude will continue to remain a convergent body and will need to be re-created to make a solid body.


The default setting for this option was OFF in NX11. Now the default option has been changed to ON in NX12.  Later NX releases, NX1847 and NX1872 series, have the option turned OFF.
 
When customers want to create an extruded solid body in NX12 and later and are making convergent bodies instead, confirm the option "Treat Degree 1 Spline as Polyline" is OFF, which will create an extruded solid body.

Hardware/Software Configuration

Platform: INTL64
OS: windows
OS Version: 10_1803
Product: NX
Application: DESIGN
Version: V12.0.2
Function: FEATURE_MODEL

Ref: 002-8014702