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a novice here looking to be ambitious (and presently failing).

I'm trying to take a polygon plane (approximately circular and with radius = R) and screw modifier it with an R that reduces in size with z-position, such as described in the attached media, such that the eventual screw mimics a circle.

enter image description here

Given that a similar solution is presented in method 2 here, I suspect the solution will involve either Geometry or Animation nodes, but as a 3D modelling novice, I have absolutely no idea how to do nodes, and I'm not even sure that Blender can do what I'm asking. I also suspect that a python script would be involved.

Advice, pointers, suggestions, and demonstrations from the advanced blender community would be greatly, greatly appreciated. Even links to appropriate nodes & python youtube tutorials would be great - my problem as a novice is in part not knowing what to search for...

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  • $\begingroup$ Hi, welcome to BSE! We're a welcoming community, however we're driven by a very specific ruleset: Tour. Please make the title of the question specific, e.g. "Use a screw modifier on a circle to get a sphere", also please put some effort into the question: a scan of a sketch is absolutely fine, but you should write down the description in a text form that will be searchable. Also show what you have tried already as a proof of doing your homework, cheers! $\endgroup$
    – Markus von Broady
    Commented Sep 19, 2022 at 14:46
  • $\begingroup$ ... or is this the sort of thing? $\endgroup$
    – Robin Betts ♦
    Commented Sep 20, 2022 at 9:14

2 Answers 2

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A screw modifier is probably not the way to go, or perhaps I don't understand your question... The question linked by you indeed produces a screw. The sketch you provide doesn't resemble a screw.

So let me try to take advantage of Cunningham's Law and post a first answer:

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I guess that OP may wish to rotate each plane to form the screw, something like this?

enter image description here

So a node layout something like this?

enter image description here

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