I had an inventor part which I imported and knocked up a quick drawing. I did a section through the holes in it but then in the section view it didn't show the holes?
Has anyone else seen this behaviour?
Yeah not sure? I've had the 3d section not work on certain stp imports. But I got given this to remodel in NX 12. Can't bring inventor into nx12, so did it in Alibre and did a quick drawing to get the dims off it.
When you have do a 2d section on a drawing, then change the view display in the section the hidden lines of all the holes show up, so it's like it's not being "cut" so to speak.
I then created a Precise Section View and it failed, Then I followed your example and moved the top face down only .001 mm and the section view worked. That's odd but maybe something to remember for other imported models that don't section. It would be interesting to know why moving a face would allow the section view to work.