how to: put a spiral around a circular shape
I have a shape, like a donut with a flat interior, I would like to be the basis of a scroll, that is, the scroll should go around it and end up where it began, hmmm, like a spiral on it's side wrapped around a donut. Am I clear enough? It's somewhat hard to describe. Anyway, how should I go about it?
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Replies to This Discussion
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Permalink Reply by Jeffrey Everett on -
well, I got it, but through a round about way. I put a helix around the entire object and pulled it back onto multiple surfaces... now to get a bit fancier...
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Permalink Reply by Gabe on -
Looks like you may have figured out a way. My process for that is:
1. Take the core line of the doughnut (the primary circle of a torus or basically the circle at the center) and analyze it for length.
2. make a line of that length.
3. make a spiral using the endpoints of that line for its axis. Make sure the number of turns is an integer.
4. use the "_Flow" command, choosing the line as the base curve and the circle for the target curve.
Then you will have a perfect spiral around the doughnut. Make adjustments for the flat surface from there.
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Permalink Reply by Jeff Hammond on -
why not just use the helix or spiral command with the option 'around curve' ?
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Permalink Reply by Jeffrey Everett on
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Never thought of it, thanks!
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Permalink Reply by Jeffrey Everett on
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Thanks Gabe, that's almost exactly what I ended up doing, but your way is even better than what I used!
I'll post what I came up with just as soon as my customer agrees that would be ok.
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