Edit Deformers > Mirror Deformer Weights

Edit Deformers > Mirror Deformer Weights >

Opens the Mirror Deformer Weights Options window, which lets you set weight mirroring options for the blend shape, cluster, jiggle, and wire deformers. See also Mirror deformer weights.

Mirror across

Select the plane you want weights mirrored across.

XY: Specifies mirroring weights about the global XY plane (the default).
YZ: Specifies mirroring weights about the global YZ plane.
XZ: Specifies mirroring weights about the global XZ plane.

Direction: Specifies direction of the mirroring along the specified Mirror across plane. The option updates depending on which Mirror across axis you choose, for example: Positive to Negative (+Z to -Z).

When on, mirrors weights from the positive side to the negative.
Create New Deformer: When on, creates a new deformer. When off, no new deformer is created.

Surface Association

Determines how the surface components on opposite halves of the object correlate to each other. Select from the following:

Closest point on surface: Finds the closest points between the source and target surfaces and smoothly interpolates the weights at those points. This is the default setting.
Ray cast: Uses a raycasting algorithm to determine sample points between the two surface meshes.
Closest component: Finds the closest vertex component (polygons) or control vertex (NURBS) at each sampling point and uses its skin weight value without interpolation.