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I'm trying to create a Yin Yang symbol in 3D like this: Yin Yang mapped onto Torus - YouTube

Yin Yang Torus

But I can't find a way to make it with Blender. Any ideas?

FYI: I tried to create it from Quad Sphere like a tennis ball, but failed.

Failed Yin Yang sphere

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1 Answer 1

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Thanks to Jachym Michal and Duarte Farrajota Ramos, I made it!

Yin Yang Animation

You can download Blend File for free from https://gum.co/yin_yang_sphere_blend

The procedure is as follows:

  1. Add UV Sphere (Radius = 1m)
  2. Add Plane (Size = sqrt(2), RotationX = 90)
  3. Select Plane -> Convert to -> Curve from Mesh/Text
  4. Edit Plane -> Extrude vertex to make square with diagonal line (Turn on Vertex Snap mode)
  5. Finish editing Plane
  6. Select Plane then UV Sphere
  7. Go into Edit mode -> Knife Project (Cut through = ON)

Step 1-3 Step 1-3

Step 4-5 Step 4-5

Step 6-7 Step 6-7

Finish Assigned materials (white, black and transparent)


NOTE: If you look closely at the reference video, the inner surface of the sphere is slightly raised.

enter image description here

My model doesn't have that part, so if you set the camera to the angle where you can see the Yin Yang plane, a small circle will be distorted horizontally.

My model is distorted

Unfortunately, this seems to be the limit for non-mathematical modeling.

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