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Adjusting the Weight Maps
The blending effect can be previewed – even at meshing time – when you click on one of the vertex maps. If the result does not meet your expectations increase or decrease Mesh > Channels > Weight > Min and Max values, and change "Smoothing Scale Length" to blur the vertex maps (requires re-meshing!).
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If you are not sure which values to enter enable the weight property's "Auto" mode and you will see the current lowest and highest values. These values can be used as references. Yiu can alos expand the "Weight" parameter and adjust colours with a gradient.
"Smoothing Scale Length" ranges between 0 and 1 (0 = no smoothing, 10 = maximum) and helps to avoid flicker and improve the transition between the colours/materials.
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