Brush Twist settings

From ZBrush Info

The Twist settings go beyond brush orientation to add a set of extra control to the spin aspect of your brushes. These settings are primarily for the Groom brushes, but several new brushes do use these features. Simply put, they allow the movement of points around the center of your brush. Use the Twist Rate, Centrifugal, and Radius settings to achieve various results.

The Twist menu in the Brush palette

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Twist Rate

Affects how fast the twist will orbit around your brush when applying a stroke to the surface.

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Centrifugal

Determines how much of the surface will be pulled or pushed as the twisting is happening.

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Radius

Controls the falloff of the twist rate.

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