Unfold UV and Optimize UV Tools

To open the Unfold UV Tool, click the icon on the UV Editor toolbar or select Tool > Unfold UV Tool from the UV Editor menus.

To open the Optimize UV Tool, click the icon on the UV Editor toolbar or select Tool > Optimize UV Tool from the UV Editor menus.

The Unfold UV Tool lets you interactively unwrap the UV mesh for a polygonal object while trying to ensure that the UVs do not overlap. Unfolding UVs helps to minimize the distortion of texture maps on organic polygon meshes by optimizing the position of the UV coordinates so they more closely reflect the original polygon mesh.

The Optimize UV Tool evens out the spacing between UVs on a mesh, fixing areas of distortion (overlapping UVs).

The following options appear in the Tool Settings window when you select Tool > Unfold UV Tool > or Tool > Optimize UV Tool > .

Unfold3DBrush Options

Mode
Toggles between Unfold and Optimize tools.
Brush Size
Sets the radius of the tool.

Hotkey: B + drag left/right to adjust the brush size.

Brush Pressure
Determines how much the tool affects the surface.

Hotkey: M + drag up/down to adjust the brush strength.

Iterations
Specifies the number of times the Unfold or Optimize calculations are performed.
Note: A very high number of iterations may produce undesirable results.
Surface Angle
Controls the strength of the surface and angular optimization, minimizing stretching and angular errors in your UV map. The default value is 1.
Note: This option is only available when Optimize is selected.