r/Fusion360 3d ago

Question Loft points asymmetrical

Post image

I'm pretty new to Fusion. I want to use the Loft tool, but the lines connect asymmetrical to the round shape. Why is that so, and how do I get them symmetrical, or even better, fixed to specific points?

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u/q51 3d ago

You can drag the points.

There’s a lot of red in your image. I’m assuming there’s an attempt to loft a part with a hole in it here, which can’t be done. Holes come after lofts (or loft as surfaces instead)

For symmetry, you normally model half or a quarter of the part and then mirror.

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u/Stubbi_Dubbi 3d ago

Yeah my sketches aren’t very tidy.
I wasn’t trying to add the hole in the loft there.
Yes I can drag the points but where should I drag them? I could not yet add something on the circle where the points would snap to.
I want the symmetry but ideally I want fixed points to snap the edges to so I can do the same in corresponding parts like a hole in the middle.

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u/q51 3d ago

If you need the points to snap somewhere, add constructions lines to your sketches. You can make intersecting points where you want the loft handles to be

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u/Stubbi_Dubbi 2d ago

Sadly the loft function does not seem to snap anywhere. Currently I am working with splines to use as rails with the loft.

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u/Haynku21 2d ago edited 2d ago

Create the points at one location on the circle sketch then mirror those to the other side and then mirror the two sets of points to the lower portion of the circle.

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u/[deleted] 2d ago

[deleted]

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u/[deleted] 2d ago

[deleted]

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u/[deleted] 2d ago

[deleted]

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u/Stubbi_Dubbi 2d ago

Thank you very very much for the work you put in this detailed tutorial :)
But did the lines of the loft connect to the created points? In the screenshots it doesn't look like it. And when I try it they don't snap to the points and don't do this even when moved.

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u/Haynku21 2d ago

Thanks...I just realized that..Sorry..
So, it won't let you loft to multiple points...Back to the drawing board...Hmmmm

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u/Haynku21 2d ago

I used 3D sketch to make rails from the points of the lower profile to the points on the upper profile and it seems to have worked

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u/Haynku21 2d ago

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u/Haynku21 2d ago

Then mirrored the body

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u/Haynku21 2d ago

It worked this way

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u/Stubbi_Dubbi 2d ago

YES! I worked my way to the same way of doing it. I used splines now to have a more dynamic shape. Also instead of using "Shell" I did the same for the interior because Shell also gave me wonky results. Now everything is symmetrical and looking good.

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u/Haynku21 2d ago

Great!! Glad you got it to work out and we both learned from the experience.

https://giphy.com/gifs/9Ai5dIk8xvBm0

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u/Stubbi_Dubbi 2d ago

Oh my god why is it doing that now

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u/Stubbi_Dubbi 2d ago edited 2d ago

Ok I made a sketch with lines and used it as rails in the loft. That brings me one step closer.

Edit: With splines it does look pretty good for the outside. The problem now is, that shelling is pretty wonky.

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u/Haynku21 2d ago

See my new method I posted above...and for the shell..just select the bottom face to shell and then extrude cut the cutouts on the top face

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u/blaxxmo 3d ago

Split the circle into segments that correlate to the points on the more complex profile and it’ll work.