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Strange constraints in sketch from other sketches/bodies

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Message 1 of 5
robQS72Z
176 Views, 4 Replies

Strange constraints in sketch from other sketches/bodies

It looks like the constraints and relations in Fusion 360 changed in an unwanted way.

In the past, you needed to explicitly project entities from bodies and other sketches into a sketch in order to put a relation or a constraints between those.

 

But with the latest Fusion 360 update, this changed.

As an example, here is a body that I created:

robQS72Z_0-1687839562613.png

I created a sketch on top of this body (a box) to create a lid and I projected the outer perimeter and the location of the 4 mounting screws. When drawing the holes for the screws I noticed that unwanted constraints were created automagically by F360 and I also see a lot of features of the body popping up as highlighted items when I draw on the sketch.

To give an idea of what I mean, I have hidden the body from the view and moved the mouse over the sketch:

robQS72Z_2-1687839960480.png

 

As you see, the inner perimeter of the body is now highlighted.

I somehow like this a bit over the old way of putting constraints and relations but it's getting annoying as soon as I discovered that, especially on the mounting holes, it is getting very difficult to draw a circle without getting constraints that should not be there at all.

 

And this is just a simple part. I imagine that it becomes more and more difficult when the part gets more complex.

Is it possible to disable this feature ?

And can new features like this not be switched off by default, giving the user some documentation on how to enable them ? This is similar to the new grid and grid snap settings where I have to search the internet to figure out how to get Fusion to behave today in the same way it did last week.

 

Regards,

 

 

Rob

P.s: Just to get an idea of what I am creating, this is the 3D view of that body, a housing for an LCD module:

robQS72Z_1-1687839673212.png

 

 

.

4 REPLIES 4
Message 2 of 5
robQS72Z
in reply to: robQS72Z

The problem gets even bigger when I want to make an extrusion using this sketch.

Remember: the sketch only contains the outer perimeter the holes in the body (as construction lines) and the mounting holes drawn.

But if I now want to make an extrusion, I need to click a lot of different parts to get just what I have created in my sketch:

robQS72Z_0-1687841070818.png

This is not only a nuisance, this is also a high risk of creating an incorrect part because I now have to check each and every little detail to see if there are no holes left that should not be there.

Luckily I noticed this in time because the mounting holes should just be the small hole, not the bigger one (that contains a heat set insert)

Message 3 of 5
HughesTooling
in reply to: robQS72Z

Check in preferences and make sure these 2 options are still unchecked.

image.png

Mark Hughes
Owner, Hughes Tooling
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Message 4 of 5
robQS72Z
in reply to: robQS72Z

Thanks, that did the trick for both the constraints and the extrude feature.

 

But I'd like to stress (again) to AutoDesk that default behavior should not change on an update.

On one of the latest updates the grid and snap to grid also changed and even though this was an easy fix, I don't like this kind of changes on a mandatory update.

Message 5 of 5
HughesTooling
in reply to: robQS72Z

It didn't change for most people, my defaults on 2 PCs didn't change. I guess something went a bit wonky with one of your updates.

 

Mark Hughes
Owner, Hughes Tooling
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