Constrained items in sketches moving

[Anonymous]

Hi.

Im having this issue where inside a sketch, i have constrained some items together. for instance 2 lines to be collinear. I then pick and drag an endpoint from a completely different line in the sketch and the constrained lines move and actually come out of collinearity but keep the constraint.??
Its happening with tangents, midpoints and even dimensions are randomly moving
I cannot work out what is going on.

[Anonymous]

Hi,

Could you post an example screenshot/video?

Constraints are a simple concept, but sometimes difficult to apply. The tutorial has great guidelines.

[Anonymous]

I will try to take a video in the morning.
I am a very experienced cad user, solidworks, pro-e, catia, UG and have never experienced anything like this in any of these programmes.

Sent from my iPhone

[etfrench]

Did you see my reply in your other thread?

[TrippyLighting]

Also, share your design. Its its a bug then the developers are eager to get a hold of reproducible cases.

[Anonymous]

I re-created one of the issues.
Video Attached.

Its also seeming to be very difficult to drag points to where i want them to be. 

[TrippyLighting]

I personally avoid using the mirror / symmetry constraint almost at all cost. If I do use it it is usually the very last thing I do in a Fusion 360 sketch.

The mirror/ symmetry constraints, the equal constraint and offset curves are by far the most buggy in the fusion 360 sketch engine and if you even combine them you'll be in for  nasty surprises.

In Fusion 360 keep sketches as simple as possible - not that the one in the screencast looked overly complicated - and move into the 3D space as quickly as possible.

[Anonymous]

That is extremely unfortunate 

Attached is a screenshot what i'm trying to achieve.
Drawn in SW with no issues...

As you can see, there are only two dimensions on the drawing as all of the rest needs to be geometrically constrained to achieve the right outcome.

(one dim is an offset for material thickness)

[TrippyLighting]

In you sketch I an see the dimensions, but I cannot see what the constraints are.

In Fusion 360 you could try to sketch only lines without thickness and then extrude those into surfaces that can then be thickened.

That should simplify the sketch quite a bit.