Like the old nursery rhyme, the facing ration is connected to the... V co-ord, the ramp is connected to the... SSS. Ive started testing some shader networks to get a good SSS skin, as parts of the robot are transparent im using one SSS that splits off into two shader groups, this way any changes to on will affect both as i want to keep all the values the same apart from the transparency. Also ive set up a ramp texture that used the facing ratio to add some small details. Then when most of the modeling is complete i will just connect the ramp up to some textures ill export from mudbox :D
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