2D Contour command changed to strange behaviour recently

[Willa1980]

Hi,

the 2D contour command recently changed it's behaviour in a strange way. Here's what I do:

I open an older design, and reselect the contours that the 2D contour command is supposed to process. The new toolpath looks very weird and is not useable. Please fix this... It happens with all sorts of different designs, not only this specific one.

Screencast of the problem here:

https://knowledge.autodesk.com/community/screencast/b9aa7033-ff4f-4100-af1b-6dda8adb8541

[LibertyMachine]

I'm curious why it's not seeing the lines as a continuous entity and creating one contour. Is this a model you can share to the forum or email privately?

[Willa1980]

It was never seeing the lines as continous entities in the past. But in the past, 2D contouring these lines worked anyway.

The lines were generated by projecting a body to a sketch plane. It happens very often to me that these projections are not closed. After manually closing them, they're still not seen as continous entities in 2D contour.

Here is an example of the problem:

http://a360.co/2dJhblu

[LibertyMachine · Accepted solution]

While it did work before, it is my suspicion that one of three things have happened:

1) The prior 2D success was a bug and it shouldn't have happened anyway

2) The way that the Sketch/Project is now being calculated has broken and it's not giving proper results.

3) The model is an imported entity and Fusion is not recognizing entities as anything other than sketch segments. Therefore no arcs or straight lines are being understood.

What all that boils down to is this: You have a pile of "splines" with no discernible characteristics. 2D Contour is not built for that. Yes, it can be made to do so, as i will show you in the Screencast below. The other option you can use is Trace, which I also included in the Screencast.

[Willa1980]

Thanks gearsoup!

Actually, I was totally unaware of what the options dialogue (open contour / closed contour / accept / etc) would do. I never understood the effect of it. Thanks for showing what is can be used for. I bet, I am not the only one that never understood this dialogue...

[LibertyMachine]

More than I think the Fusion team is aware of. This seems to be the most common problem that people come to the forums with. Second to that is how to properly do a Setup...