Creator: AdamTM 
Category: Toon
Sent online: 2010-02-01
Rating: 9.8 (5 ratings)
Downloads: 2996
Description/Information:
This is a material that simulates inking.
It is EXTREMELY sensitive to light and a lot of fine-tuning needs to be done to set it up for your scene:
Nor-slider regulates streak lenght
Texture Colorband regulates streak density
Shader Ramp regulates shadow depth
The first texture regulates roughness of the sketch (more charcoal -> more ballpen)
This material is completely procedural.
Enjoy!