Develop, or flatten, a curved surface to a sketch ?

[Le_Bear]

There are plenty of tips around about projecting a sketch onto a curved surface, but how about the reverse? WITHOUT using sheet metal.

I guess the best example I could give is a stich and glue boat. Say that I model something like this, using mostly Loft for the hull. 

How could I extrapolate the developed surfaces to get the exact shape to cut, like in this example below?

if this is doable in Fusion right now, I would love to know how. If not, could this be a feature to be implemented?

Thanks for suggestions,

Bernard

[TheCADWhisperer · Accepted solution]

I would split up into the individual Components.

For all of the developable sheets I would use Sheet Metal (doesn't matter if the material isn't sheet metal) to get the Flat Patterns.

For all of the double curvature components I would use a combination of MeshMixer and Fusion as follows (the video is for Inventor, but the process would be identical for Fusion).

In this case I am doing the Sail, but it could be for any of the components.

[TrippyLighting]

Very nice screencast. Thanks for that! I very rarely work with triangulated meshes or Meshmixer and this ability of Meshmixer was unknown to me.

I

[Le_Bear]

Thanks you for this very interesting screen cast, did not know this feature was in MeshMixer. Still, what I don't understand, is how would  I split each surface in a separate body or component, as originally it's a single body made by loft? The sail is obviously a single body to start with.

Maybe I am missing something obvious?

I do appreciate the help, and will refer to your screen cast in the future.
Regards,

Bernard

[TheCADWhisperer]

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@Le_Bear wrote:

..... how would  I split each surface in a separate body or component, ...

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[Le_Bear]

Yes, I know the feature, but never thought I could use the edges of a surface as profile. Hum, OK, I need to try that. Thanks!

[Anonymous]

Thank you very much for this screen cast. In a last two days a tired several methods to flatten or unwrap my small dingy hull design, non of them worked, but this one is working.

[pedro.tx]

 Thank you. It’s so refreshing to see a clear and complete solution that I don’t have to search everywhere for. I will be sure to check out your channel!

[SLOW.PROCESS86]

Sorry to bring up an old thread. Does anyone know if there's a way to take flat plans such as the ones posted above and then to form them into the completed boat?

[davebYYPCU]

That would be the most counter productive way to do it.

Published plans I deal with are notoriously filled with errors, and making a model to unfold is a known reliable way to go.

Might help....

[TheCADWhisperer]

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@SLOW.PROCESS86 wrote:

....take flat plans s

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Can you File>Export your *.f3d file to your local drive and then Attach it here to a Reply?

[odolyte]

Here's a quicker way to do this with F360 and Meshmixer. You'll get an .svg file.

https://www.youtube.com/watch?v=dalldQLphyo

[barry9UDQ6]

I am very curious as to the recommendations for flat patterning the developable surfaces.

In Inventor I used to loft as a surface between 2 splines, then thicken and flat pattern, but I have yet to find a way to do this in Fusion unless I am missing something.

[TrippyLighting]

No, you're not missing any functionality.

This can only be done in Fusion 360 with developable  surfaces/geometry with the sheet metal tools.

Flattening non developable surfaces will always result in some degree of UV-stretching.