Support Lines

[officeZJ276]

Hello community,

is there a way to turn off the supportive lines while sketching?

Either while sketching or in preferences?

If not, can we add this to preferences in the next update?

Thanks!

[kacper.suchomski]

Hi

You can create a other type of rectangle.

[davebYYPCU]

Yes and no - (there is no preference setting)

Yes - Use a 2 point rectangle, or delete them.

Might help….

[officeZJ276]

I can also connect 4 individual lines with each other and add 4 perpendicular constraints.

Thanks for your help, Autodesk Expert Elite Member.

[kacper.suchomski]

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@officeZJ276 wrote:

I can also connect 4 individual lines with each other and add 4 perpendicular constraints.

Thanks for your help, Autodesk Expert Elite Member.

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Yes, you can.

If you're creating a rectangle from the center, there must be something to define that center. This is very logical behavior.

Just as a two-point rectangle automatically applies perpendicularity and horizontality constraints compared to manually adding lines, the rectangle from center command positions the geometry (another form of automation) and must base this process on something.

[officeZJ276]

Hmm, that's what I thought. 
I am aware, that 2 point rectangle don't have support lines, but I often need/use center rectangles, and they always come with support lines.
Unfortunately they are not as much supporting and needed, as much as I do need them.

Therefore it would be great having a toggle on/off option for those.

Thanks anyways.

[officeZJ276]

Yes, that is correct and I agree, that it needs something to define that center.
My question is though, if we can turn those off, as they are not needed in most (of my) cases.

On top of that, they center rectangles are also not behaving as they should be in my opinion:
If a center rectangle is drawn and defined by specific measurements, and then you would like to change one length, let's say from 100mm to 80mm, you would assume that it deductes 10mm on each side, since a centered rectangle should stays centered. Unfortunately it deductes 20mm from one side, unless you add a "Fix" constraint to the center point.

[kacper.suchomski]

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@officeZJ276 wrote:

On top of that, they center rectangles are also not behaving as they should be in my opinion:
If a center rectangle is drawn and defined by specific measurements, and then you would like to change one length, let's say from 100mm to 80mm, you would assume that it deductes 10mm on each side, since a centered rectangle should stays centered. Unfortunately it deductes 20mm from one side, unless you add a "Fix" constraint to the center point.

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This is exactly how a rectangle drawn from the center behaves if your sketch is correct.

If the geometry exhibits a different behavior, it means you need to practice your sketching skills.

[dargas22]

You can turn off "Construction Geometries" in the sketch pallete..it's under the options near the bottom of the list.
Note** This will make it so none of your construction geometries show in the sketch.

[jeff_strater]

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@dargas22 wrote:

You can turn off "Construction Geometries" in the sketch pallete..it's under the options near the bottom of the list.
Note** This will make it so none of your construction geometries show in the sketch.

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Yes, but that is JUST a visibility setting.  Those lines are still there.  They still affect the solve.  Constraints to them are still in effect.   IMO, this is a dangerous option to leave on for more than just a quick visual check.

[officeZJ276]

Thanks for pointing that out - I honestly didn't look into that, but unfortunately it does not solve my issue.
Would like to find a solution, where I can turn them completely off and they are not effecting following operations.
What I'd like to do: after sketching a rectangle, adding a fillet by clicking right into the corner instead of clicking both lines individually.
With a 2-point rectangle it is doable, but a rectangle with constructions geometry will not allow it.

[officeZJ276]

That's correct, I would love to find a solution where I can turn them completely off.
Thanks for your help!

[dargas22]

The time you have spent worrying about this could have been spent just clicking both lines and being done with or moving on with the project...

[officeZJ276]

If you do this for many projects over years, it is more helpful to invest some time finding a solution than going forward with the default.

[kacper.suchomski]

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@officeZJ276 wrote:

If you do this for many projects over years, it is more helpful to invest some time finding a solution than going forward with the default.

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There are two solutions:

1. you automate the position of the rectangle relative to the center, and in return, you have more work to do when adding fillets, or
2. you manually position the rectangle relative to the center, and in return, it's easier for you to add fillets.

The more interesting question is: Why do you add fillets in your sketch?
Especially, as you mentioned, you do it very often.

Well, officially, this is a very inadvisable workflow.

[officeZJ276]

I agree that cosmetic edge fillets are generally better added as 3D features.

But I don't think that means sketch fillets are inherently an inadvisable workflow.

There are plenty of cases where the radius is part of the defining 2D geometry rather than an edge treatment — for example guide rails, slots, tracks, extruded profiles, laser-cut parts, sweep paths, or master sketches that drive several downstream features.

In a guide rail, for example, the radius may define the actual functional path or clearance. In that case I would explicitly want the radius parametrically defined in the sketch, not added later to the resulting solid.

So I think the distinction is more:

Edge treatment → 3D fillet
Profile/design geometry → sketch fillet can be entirely appropriate

And that's why I still think it is reasonable to ask why Center Rectangle and Sketch Fillet, both native sketch tools, interact the way they currently do.

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@kacper.suchomski  schrieb:

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Well, officially, this is a very inadvisable workflow.

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I also want to address something separate, because this is now the second time this has happened in this thread.

Instead of addressing the technical question itself, you have repeatedly shifted the discussion toward your personal assessment of how I should model my parts. Advice and alternative workflows can of course be useful, but they should not replace an answer to the actual technical issue being discussed.

Your account is marked as Mentor and Expert Elite, which gives your responses additional authority within the community. I therefore think it is particularly important to distinguish between an actual Fusion limitation, an Autodesk-recommended workflow, and a personal modelling preference.

I have reported my concerns about this interaction to Autodesk.

[kacper.suchomski]

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@officeZJ276 wrote:

But I don't think that means sketch fillets are inherently an inadvisable workflow.

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That's right – fillets in sketches should only be used when there's no other way to achieve the target geometry. Whenever fillets can be added at the modeling level, that's where they should be done. I stand by this advice, and it's one of the fundamental recommendations for a healthy workflow in Autodesk Fusion.

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@officeZJ276 wrote:

I have reported my concerns about this interaction to Autodesk.

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That's fine, you have that right. However, the moderators will see that you took my statement out of context.

I made a suggestion, not a judgment. Along with the suggestion, I asked about the reasons for your workflow. I was looking for a broader context to consciously assess whether the rounding was intended for you or just a matter of habit.

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@officeZJ276 wrote:

Instead of addressing the technical question itself, you have repeatedly shifted the discussion toward your personal assessment of how I should model my parts. Advice and alternative workflows can of course be useful, but they should not replace an answer to the actual technical issue being discussed.

Your account is marked as Mentor and Expert Elite, which gives your responses additional authority within the community. I therefore think it is particularly important to distinguish between an actual Fusion limitation, an Autodesk-recommended workflow, and a personal modelling preference.

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Yes. Experience is a key component of my expertise, giving me a broader perspective and suggesting that some of the causes of problems may lie elsewhere than initially thought.
But I can't guess - I can only research. That's why I ask, suggest, and offer advice. Even if it doesn't align with your expectations.

I can't research the topic without asking a question. But I also can't research the topic without your substantive answer. However, my intentions to research and analyze the topic will be of no use if all your retorts refer to your "I know better" statement.

[kacper.suchomski]

I have reported my concerns about this interaction to Autodesk.