NX 2212: Subtraction error....... 4

[CAD2015]

Hi,

This is a very simple operation and never had this problem.
I created a tube using extrusion of a sketch circle:






The subtract tool doesn't perform. There is just a shadow of the operation, without cutting.

Where am I wrong?
Thank you!

 

[cowski]

Perhaps you have inadvertently chosen "intersection" instead of "subtract"?
If not, try giving the cutting extrusion some length in the -Y direction so that it does not start on the same plane as the tube.
If it still does not work, try examine geometry to look for issues.

 

[CAD2015]

Thanks, Cowski.
I had the same initial thought before; I double checked, I chosen to subtract.

 

[SDETERS]

It almost looks like you have two solid bodies. Try using delete body and see how many Solid Bodies you have. Kind of cool issue. ugh.

 

[CAD2015]

Yes, it's strange......

 

[cowski]

Try changing the boolean option to "none" then try to subtract in a separate step at the end. This might give you a more verbose error message if/when something goes wrong with the subtract.

 

[Toost]

Is that second extrude a solid body and not a sheet body ?
You have that option in the extrude dialog.

 

[CAD2015]

I am getting closer.......
There are TWO solids, I have no idea how that has happened.
Below is a picture showing the two solids (I gave the different colors, for evidence and place them in "Show" and the other in "Hide"...






I do not know why the Extrude (2) has two solids! Creating a subtraction would cut a solid, but the other one would not. That's way the subtraction seemed to fail: there is another solid underneath! And deleting one of them would erase the other one, as well!
What do you think has happened?
A glitch?...................

Thank you!
P.S. I attached the new NX 2212 file, for eventually investigation.......

 

[mmauldin]

Check your sketch. I created a sketch with 3 circles (2 identical) and extruded the feature curves. I got 2 solids from one extrude. Maybe the sheet body comes from an almost complete full arc.

 

[CAD2015]

Mmaulin,
Yes, your reply solved the problem.
The sketch had and extra curve, overlayed on another.
Thanks a lot!


I am laughing of myself: how could I have done such a thing?!!!!!...............

 

[Rob_N]

Mmaulin,
Yes, your reply solved the problem.
The sketch had and extra curve, overlayed on another.
Thanks a lot!


I am laughing of myself: how could I have done such a thing?!!!!!...............

i've been there... Probably why i'm bald. I pulled out all my hair years ago!

 

[CAD2015]

I understand you very well.
I had the same reaction....