Instructions

Log starts - current Gradient: Width 256, Height 256, Gradient VertCenter, From Color R: 0 G: 0 B: 128, To Color R: 0 G: 255 B: 255, Angle 0

Paste Gradient to Image

Twist, Looseness 1

Copy Image to Buffer

Mirror L/R

Merge Buffer, % of Buffer 50

Copy Image to Buffer

Negative

Map Texture, Brightness 18, Use Buffer

Rotate Seamless

Negative

Map Texture, Brightness 18, Use Current Texture

Rotate Seamless