Part of the sketch is disappearing when adding a line

[jonasgeiser]

Hi,
New to Fusion 360 and trying to make a LED Sign. But when editing the sketch, adding a new line, some parts of the sketch is disappearing. What am I doing wrong here?

Thanks.

[jeff_strater]

I don't think you are doing anything wrong.  I suspect that some curves get solved unexpectedly when you create the new line.  Can you share the design here?

[jonasgeiser]

Hi, thanks for the quick response, for example it happens when connecting the bottom under the "X"

thanks

jonas

[jeff_strater · Accepted solution]

Thanks for sharing the design, @jonasgeiser - I did not realize at first that the geometry was generated from a sketch offset.  It seems that there is a bad bug with offset on this design.  As you've seen, closing that triangle under the X causes bad things to happen.  Also, if I change the offset distance at all, even worse things happen.  I will create a bug for this.  In the meantime, if you delete the offset, it does seem to get rid of the problem (at the cost of a bunch of dimensions being added to the sketch).  Not sure if that is OK with you, but I thought I'd offer it:

Edit:  The Fusion bug is:  FUS-224303  Thanks for reporting it.

[jonasgeiser]

Hi Jeff,

that works for me, thanks for the quick help, really appreciate it.

Have a nice day 🙂

Jonas