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How to model a spiral that closes in a circle? Like hair scrunchy. I know how to model simple spiral, but how to round and close?

enter image description here

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  • $\begingroup$ Also you can model one part of it, and use an array modifier. $\endgroup$ Commented Jan 12, 2020 at 12:11

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This can be very easily created by using the Add Curve: Extra Objects add-on.

Render

  1. Open the preferences (Edit > Preferences)
  2. Search for Extra Objects and enable Add Curve: Extra Objects by ticking the checkbox. Enable add-on
  3. Create the spiral object through Add > Curve > Curve Spirals > Torus. Open the Adjust Last Operation panel in the lower left corner and configure the parameters of the curve. The most relevant parameter is the number of turns. Create curve Adjust parameters
  4. Give the curve thickness by switching to the Object Data Properties of the curve and increasing the Depth property in the Geometry > Bevel panel. Bevel
  5. Close the gap between the start and end segment of the spiral. Hold Shift and click on the two control points, then press F to close the segment. Open gap Closed gap
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  • $\begingroup$ Big thanks to you, Robert, I did it! $\endgroup$ Commented Jan 12, 2020 at 11:00
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    $\begingroup$ Damn. This works really well. And I was wasting time with screw, curve ans simple deform modifiers... :). Thanks for posting this answer. $\endgroup$ Commented Jan 12, 2020 at 11:00

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