Dragging the rails does not snap and attach to the points in the sketch

Dragging the rails does not snap and attach to the points in the sketch

hasaddl
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Message 1 of 29

Dragging the rails does not snap and attach to the points in the sketch

hasaddl
Contributor
Contributor

As shown in the video, based on the ellipses in the two sketches, when using the loft tool and dragging the anchor points at the ends of the rails, it fails to capture and attach to the points on the ellipses in the sketches, is this a bug? Or am I missing something? My operating system is macOS.

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Message 21 of 29

TrippyLighting
Consultant
Consultant

@hasaddl wrote:

Thank you very much for the demonstration, I think this could be a good solution for placing the rails at the correct point.


My recommendation would be not to follow this tutorial blindly, but observe what the surface does and apply your own thoughts. If the loft tool naturally does NOT attach the seam to that point, what makes you think that doing so is going to create a better surface ?

 

It often doesn't. There is no technical need to attach that loft handle to that point at all! In fact more often than not, allowing the loft to "do it's thing" naturally, and not touching these handles is a better solution. 

 


@hasaddl wrote:


But I'm still a little confused about the point attachment of the rails
The confusion comes mainly from this video:
At about 7:40 in this video, you can see that dragging the rail automatically snaps to the points on the curve in the draft.

 


Understood 😉 It works on my Windows machine at work. I've not tried it on my PC at home or on my Intel MacBook Pro. I'll do that tonight. 


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Message 22 of 29

jeff_strater
Community Manager
Community Manager

The one difference I see between the two videos is:  Your video shows setting tangent constraints before trying to align the profile points, whereas the one you linked in your most recent post does the alignment first.  You might try that.

 

However, what @TrippyLighting says here is accurate:  I would not rely on that interactive point mapping in any complex case.  The rules by which those points are moved are obscure at best - if you want full control, use actual rail curves.

 

Screenshot 2023-10-10 at 7.26.41 AM.pngScreenshot 2023-10-10 at 7.26.24 AM.png


Jeff Strater
Engineering Director
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Message 23 of 29

hasaddl
Contributor
Contributor

I tried the manual way of creating the rails of the loft in the sketch, but the articulated transition between the two parts of the earphone generated this way doesn't look very smooth. So I might still prefer to use the tangent curvature generated automatically by the loft tool. Regarding the loft tool's rails not being able to attach points on solids, I'll get a PC to test it out tonight and compare to figure out if it's a bug in the macOS version.

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Message 24 of 29

TrippyLighting
Consultant
Consultant

@hasaddl wrote:

I tried the manual way of creating the rails of the loft in the sketch, but the articulated transition between the two parts of the earphone generated this way doesn't look very smooth. 


I have the feeling that you are more interested in finding a bug, rather than applying proper technique. I had NO problem achieving a smooth result using the technique demonstrated in the video in my post. Obviously, simple tangency (G1) is going to get you only so far.

 

Maybe try a little harder 😉


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Message 25 of 29

hasaddl
Contributor
Contributor

I retried the process on a PC and can attest that the loft rail dragging comes up with point and the snap to it feature works fine in Windows version, while the macOS version, like all the videos I've posted in this thread, doesn't come up with points or snap.

I mean, if the issue is a bug, then find it and fix it, it's simple, isn't it? 😅
Of course I'd love to learn more about modeling techniques, but it's not the same thing as having bugs in the software, you know, a software user shouldn't be raised to have Stockholm symptoms.

 

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Message 26 of 29

TrippyLighting
Consultant
Consultant

What Mac hardware and what macOS version are you on?

On my Intel 2017 MacBook Pro, the point snapping works.

 

I am definitely not trying to discourage you from reporting bugs! However, such bugs often take months (or longer) to get fixed and show up in a production version of Fusion 360.

In the meantime, assuming you want to progress through your work,  you can follow the workflow I suggested 😉  

 


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Message 27 of 29

hasaddl
Contributor
Contributor

My device is MacBook Pro 2022 M2.
I do agree with you and I'll be using other methods to solve the bugs I'm currently experiencing. The previous replies also provide a lot of new ideas.

It's not really a serious bug, but it's quite disturbing, so I think it's important to disclose the issue and urge an official fix for this minor bug as soon as possible.

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Message 28 of 29

TrippyLighting
Consultant
Consultant

Tagging @Phil.E 

I know that many of the Fusion 360 team members are Mac users, so in theory this behavior should be easy to recreate.

 

@hasaddl that new thread was entirely unnecessary.  


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Message 29 of 29

Phil.E
Autodesk
Autodesk

@TrippyLighting Thanks for pointing this out. The issue is confirmed that on mac there is no snapping, while on windows it snaps.  FUS-141390

 

@hasaddl I have asked the admin to take down the duplicate post. Thanks for posting and for being helpful, but once you have a post describing one issue, there is no need to make another.





Phil Eichmiller
Software Engineer
Quality Assurance
Autodesk, Inc.