how can I wrap a helix up a funnel?

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how can I wrap a helix up a funnel?

Postby greatson » Wed Jun 15, 2016 2:45 pm

Hello Sketchucation forum!

Essentially I need to wrap a helix line up the side of this funnel, so I can use that contour to create a spiral staircase from the bottom to the top. I'm now at the point where I'm lost in the library of extensions I've installed trying to achieve this, and cant seem to figure it out from the youtube tutorials, so I'm reaching out to the community!

I would very much appreciate if anyone could help me out with this. Also Very open to any tips on the right extensions. The shape of the stairs will have to change as they go up as the overhang becomes more flat on the top of the funnel.

thank you for any suggestions!

-grevoir
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Re: how can I wrap a helix up a funnel?

Postby JQL » Wed Jun 15, 2016 6:00 pm

I think you could solve it using native tools.

Design the spiral you want and use "intersect faces" with geometry to find where the spiral intersects the shape you have.
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Re: how can I wrap a helix up a funnel?

Postby sdmitch » Wed Jun 15, 2016 6:41 pm

greatson wrote:I need to wrap a helix line up the side of this funnel, so I can use that contour to create a spiral staircase from the bottom to the top.
-grevoir


Center funnel on the model origin then execute plugin. Pitch is the vertical distance between start and finish of each turn.
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Last edited by sdmitch on Wed Jun 15, 2016 6:47 pm, edited 1 time in total.
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Re: how can I wrap a helix up a funnel?

Postby JQL » Wed Jun 15, 2016 6:46 pm

Brilliant!

EDIT:

It works with any vertical surface of any shape?

EDIT2:

I was going to post this, then I quit, then I came back:
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Re: how can I wrap a helix up a funnel?

Postby greatson » Sun Jun 26, 2016 10:37 am

sdmitch wrote:
greatson wrote:I need to wrap a helix line up the side of this funnel, so I can use that contour to create a spiral staircase from the bottom to the top.
-grevoir


Center funnel on the model origin then execute plugin. Pitch is the vertical distance between start and finish of each turn.



Hey Mitch! thanks for replying, I'm trying to get the plugin to work, but when I execute it nothing happens. Any ideas on what I could be doing wrong?

-gr
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Re: how can I wrap a helix up a funnel?

Postby sdmitch » Mon Jun 27, 2016 3:19 pm

greatson wrote:
Hey Mitch! thanks for replying, I'm trying to get the plugin to work, but when I execute it nothing happens. Any ideas on what I could be doing wrong?

-gr


Yes, you need to move the funnel down to the XY plane. The plugin starts from the Model ORIGIN and doesn't find a surface because your funnel is "up in the air".
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Re: how can I wrap a helix up a funnel?

Postby pilou » Mon Jun 27, 2016 6:55 pm

Put the form on the origine!

Else does this normal ?

projected.jpg
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Last edited by pilou on Tue Jun 28, 2016 10:17 am, edited 1 time in total.
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Re: how can I wrap a helix up a funnel?

Postby sdmitch » Mon Jun 27, 2016 8:44 pm

pilou wrote:Does this normal ?

projected.jpg


Yes, because plugin, as presently written, assumes a symmetrical cylindrical object.
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