Showing results for 
Search instead for 
Do you mean 


Why does it produce better results with no cut area selected ?
Using NX10.0.1


Here is no cut area


Here is with cut area




Re: Streamline

I can't say for sure without seeing the operation, but in general... cut area adds a whole other level of containment - trimming, extending, projecting. So for sure the generation should be simpler without cut area.

Mark Rief
Retired Siemens

Re: Streamline

[ Edited ]

Seems its worse when the fillets are perpendicular to a vertical wall.
When tilted 5-10* off the generation is very smooth with cut area.
I was not aware until yesterday that it would work without cut area.



Re: Streamline

Remember you can also change your projection vector.  When the surface is perpendicular like youi're saying it is usually better to use an alternate projection vector such as towards drive, or towards line.

Jake Hardwick
CNC Programmer
Senior Aerospace AMT
Production NX8.5.3.3 Beta testing NX10.0.1.4

Re: Streamline

I will have to try that. I'm still new to using streamline.

Re: Streamline



A short clarification about the cut area approach:

The basic pattern is created on a drive geometry (explicit or implicit). if part geometry is selected the pattern is being porjected to it along the projection direction. if cut area is defined as well, the surfaces of the part within the cut area are used as before, while rest of the part surfaces are considered check geometry. due to various deasons a continous pass on the drive may be projected such that it partialy touches the cut area and partially other part surfaces that are considered as check. the portion touching the check is trimmed and open ends are reconnected by NCMs.

In a 3X operation, projection along tool axis or along ZM diretctinon near a vertical wall is a common issue that may explain the bad results shown in the picture above. as sugested by others, a different type of projection may resolve the issue. this is only a guess, since it is hard to get to the buttom of it from one picture.


Hope this helps,


Eddy Finaro

NX CAM Product Manager

Eddy Finaro
NX CAM Product Manager
Siemens PLM

Learn online

Solution Information