Section view without edges

[Anonymous]

Hello..

I have a problem with inventor professional 2019. 

When i have a section view on an assembly it seems that some "edges" (the cilydrical surfaces) don't appear on the screen. Obviusly i have already chosen the view with edges.

I've already updated the vga drivers and i have installed the last version of Inventor. 

Is there any solution  ?

Thanks in advance

[TheCADWhisperer · Accepted solution]

[Anonymous]

That solution partially solves the problem but i think there are some graphical glitches.

Zooming in or out causes the appearance of the edges (see images below)

Zoom 1Zoom 2

[TheCADWhisperer]

Can you Attach a file here that exhibits this behavior?

Are you on 2019.1?

What are your Graphics card/driver specs?

[Anonymous]

Yes for sure,

i'm using Inventor Professional 2019 on this system:

Intel i7-7700 HQ 

16GB ram

Win 10 Pro (v.1803)

Nvidia GeForce GTX1050 with latest driver

[TheCADWhisperer]

Can you Attach the part you labeled No here?

[Anonymous]

Here there is the part.

[TheCADWhisperer]

Several observations:

1. You attached an assembly file (*.iam) without any part files (*.ipt)?

2. The part that you did attach here test1.ipt is not referenced in the assembly file Studio 55-25.iam that you attached here.

3. Sketch1 of the part test1.ipt is not fully defined and has at least 3 areas of questionable geometry as indicated in image below.  (To see the issue circled in red - delete the horizontal and vertical lines indicated.

3b. Work Planes 1, 2 and 3 are not needed.

3c. test1.ipt was created in an ancient version of Inventor (v5.3 SP2)

4. Based on experience - I would expect to see similar issues in all of your part files (if you Attached the parts for the assembly here).

[Anonymous]

Let's say that several sketches are not totally defined.

So is this the problem?

[TheCADWhisperer]

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@Anonymous wrote:

Let's say that several sketches are not totally defined.

So is this the problem?

---

Not necessarily.  In fact, I modeled perfectly fine parts in AutoCAD without constrained sketches for years.

Parts can be modeled in Inventor without any constraints (other than Coincident) or any dimensions just fine.

But what I see is an indication of overall poor modeling techniques that can (and often do) result in unpredictable behavior.

[johnsonshiue]

Hi Alessandro,

I can reproduce the behavior on 2019.1. Indeed, the silhouette edges are not properly displayed. It is kind of random. Depending on the zoom factor, the edges appear and disappear. I will work with the project team and see if this is a known issue, which has been fixed in our internal build.

Many thanks!