By vusta · 2016-11-22MCG to select Open Edges or Verts, then you can use the selection to do something in the DCM...like putting some noise on the edges of a leaf..or produce a map that affects only outside edges like transparency.
Video is a little tute on DCM, I didn't include a DCP coz it's way too simple...just do it yourself instead...
OK, have since discovered that you can simply use Edge Input>Edge Angle in the DCM and then you don't even need this MCG to select the Open Edges (try it yourself to see, I won't record another video just to embarass myself)...oh well, I've only known Data Channel for a coupla days...