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

CAD2015

CAD2015

Computer
Jan 21, 2006
2,053
Hi,

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



1745854652743.png


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

Where am I wrong?
Thank you!
 
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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.
 
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Thanks, Cowski.
I had the same initial thought before; I double checked, I chosen to subtract.
 
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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.
 
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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.
 
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Is that second extrude a solid body and not a sheet body ?
You have that option in the extrude dialog.
 
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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"...




1745928858916.png

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.......
 
Last edited:
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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.
 
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Mmaulin,
Yes, your reply solved the problem.
The sketch had and extra curve, overlayed on another.
Thanks a lot!
(y) :):):)

I am laughing of myself: how could I have done such a thing?!!!!!...............
 
Last edited:
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CAD2015 said:
Mmaulin,
Yes, your reply solved the problem.
The sketch had and extra curve, overlayed on another.
Thanks a lot!
(y) :):):)

I am laughing of myself: how could I have done such a thing?!!!!!...............
Click to expand...
i've been there... Probably why i'm bald. I pulled out all my hair years ago!
 
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