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Intersection curve, surfacing help

adrian_aghai
Explorer

Intersection curve, surfacing help

adrian_aghai
Explorer
Explorer

Hello all, I know in solidworks, creating a 3d curve from two curves is fairly straightforward. However, I'm having difficulty doing it in fusion, or maybe I'm not following correct steps?

I've included images of my intent, and I've also included the Fusion file.

If someone could drop a hint or two of how I'm supposed to go about this, while keeping surface continuity, that would be great! 

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TimelesslyTiredYouth
Participant
Participant

Hi @adrian_aghai 
You can create a 3D curve by enabling 3D Sketch mode and using the Spline tool to connect two curves. Snap the spline's endpoints to the existing curves, and then adjust tangency or curvature (G2/G3) for smooth continuity using the "Edit Splines" tool. For surface continuity, check the curvature combs to ensure smooth transitions. This approach replicates what’s done in SolidWorks but may require more manual adjustments in Fusion.

I only realised after I wrote but when I say 3d sketch there is a whole workflow under that so...

Make the rough curve sketch, move into place where you want it, and then use the G2/G3 continuity

 

kind regards

Ricky

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wersy
Mentor
Mentor

Like this?

 

wersy_0-1734818253846.png

 

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adrian_aghai
Explorer
Explorer

Yes that's very similar, I will check out the file to see how you did it tomorrow, thank you!

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I would advise against using an intersection curve as they often exhibit curvature problems. Your first sketch has a "strange" curvature spike I'd check out and fix.

Also if curvature continuity is what you are looking for, then a tangency constraint in the sketch isn't going to help that 😉

 

TrippyLighting_0-1734863120854.png

 


EESignature

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Having looked at your model a little closer now, there are more recommendations I have.

1. Mirroring an entire ketch half, in general is not a recommended technique. That is particularly the case with when using fit point splines.

2. The separate profile curves for the handle are not needed and also should not be mirrored.

 

I would actually create the initial loft  including the tip and then trim away what isn't needed.

 

If you can share an image of what you are trying to. model we can provide better help.


EESignature

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Hello, yes, that's actually exactly what I did. I did a soft model rebuild and did full arcs instead of mirroring, and then lofted the whole shape and did a cut instead. Made life much easier/faster/efficient.
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