Can't cut Sheet Metal

[ehcanea]

Hello guys, after receiving your help I managed to get half way to the design i wanted. Unfortunately I encountered a different problem. I managed to create the object with the pattern I want, unfortunately I can't modify the object at all. I am trying to cut the top and bottom parts on the inside to fit each other like a box. But every time I try to cut a small part on the inner part using the extrude command I get an error message: "Error: inconsistent information in vertex and coedge attributes" .

P.S. here is the link to my previous post: https://forums.autodesk.com/t5/fusion-360-design-validate/bended-pattern-is-it-possible-and-how/m-p/...

Any idea or advice?

[TrippyLighting]

Can you share you model ?

[ehcanea]

Here it is: https://a360.co/2pXOxUN

Thank you for taking your time. I am trying to cut out from the sheet metal thickness.

[ehcanea]

Any news?

[jeff_strater]

@ehcanea,

I am looking into this.  It looks like the folded part contains some geometry errors that we need to investigate.  Is your goal with this cut to just thin the interior?  There may be other ways to accomplish this.

Jeff

[jeff_strater]

It turns out that the geometry errors are caused by the coincident faces produced after the extrude after the unfold:

This extrude causes the faces to coincide on the refold.  This is not handled well by Fusion today.  If you edit that Extrude so that there is a gap after the refold, the Extrude cut will work:

Alternately, if you want a fully closed result, then I would recommend modeling just half of the form, and then mirroring it.  That will remove this coincident geometry as well.

[ehcanea]

Thank you for your help, it is very helpfull.

[mavigogun]

This is a great example of Fusion generating an error message- "inconsistent information in vertex and coedge attributes" -but no solution.   Naturally, users want to know exactly how they contribute to an error that leads to dysfunction or a need to rebuild.   In my case, yesterday, I confronted this error by performing a series of cuts rather than just one.