Crash due to dimensioning to elements projected from insert-derived sketch

[kristianY3VSG]

Hi,

last days I spent many hours to find a work-around for this problem, but unsuccessful:

From a design "Masterplan" I insert-derived a sketch containing overall measures and positions into another design "Part", where particular elements are projected to local sketches. Dimensioning/constraining local sketch elements to these projected points and lines makes F360 to crash randomly (mostly even without opening the error-messaging-pop-pup!).

As the design is quite complicated, I experimented with separate files "Master" and "Slave" containing 1 simple sketch each. At one moment all remaining blue lines got fixed, though not beeing fixed by dimensions or constraints. A new line drawn after this accident remains movable, but I stopped experimenting after this.

Has anybody similar experiences, can someone suggest some workaround? Can the SW team have a look at the attached files, what went wrong with the data?

Thanks...
Kristian

[TrippyLighting]

This might well be a bug. The Derive functionality is relatively new.

Is the a reason why you did not use Insert instead of derive  that did you simply not want to see every sketch in every design file you work with ?

There were no design files attached.

[kristianY3VSG]

Yes, I´m building a hierarchy of designs, which should share some common overal dimensions from the masterplan (root of the hierarchy) and other sketch profiles from specific parts on higher levels. I considered Insert Derive to be smarter in this case. I want to try the use bodies instead of sketches, but hadn´t time so far. Neverless, I think, the bug should be found and eliminated 😉

In principle sharing parematers (=basic dimensions) would suit my problem, maybe it´s a suggestion for further improvements… 😉

If you´d be interested, I can provide the primary problematic design and a screencast showing the crash - let me know.

Attachment - sorry, I clicked on the wrong file 😞 

[kristianY3VSG]

I tried to attach the file Test_Slave.f3z, but the form doesn´t accept it - POST doesn´t work, but no error message appears. Is there any restriction I don´t know, or how can I send the file?

[TrippyLighting]

A .f3z file is a Fusion 360 assembly. For those it might be better to share the public link. This article describes how to do that.

[kristianY3VSG]

Sorry, I haven´t seen any error message explaining or info, that attaching f3z is not allowed… 😉

I tried to upload the f3z-file, but it was changed back to two f3x:

Master: https://a360.co/2SZhwJi

Slave: https://a360.co/2IvUIfl

I don´t understand, where ist the problem? The 85 kB volume of the f3z? Or did the programmers just forget to add f3z to the list of allowed endings? 😉

I recorded a screencast, but can´t see it in the original post, do you see it? Maybe i didn´t click Insert, I´ll try it again.

Thanks!

[TrippyLighting]

Frankly, I haven't a got clue why this happens.

It might just be an ordinary bug in the sketch engine that does not have anything to do with the derive functionality.

If you delete the 30mm dimension I had marked with a red rectangle things start behaving normally.

[kristianY3VSG]

Thanks for the info - now I tried this, the strange behavior really switches on/off with adding/deleting this dimension.

Since a longer time I felt, that something is wrong in the sketch engine, as sometimes blue elements get frozen, though not beeing fully constrained - typically in sketches with a greater amount of arcs. I hope, my files will help your team to find and eliminate this bug ASAP, as I need to continue working on my project!

As I wrote before: I can provide you with the original files of my project, where even moving end points of lines to coincident positions make Fusion to crash - just ask, if interested!