i like to share my version of an worn edges/ paint shader for c4d.
After some research on how to build a worn edges shader, i found some links that helped to understand.
Its pretty simple if you know how

http://render.otoy.com/forum/viewtopic. ... rt#p154262
http://render.otoy.com/forum/viewtopic. ... rn#p122269
http://render.otoy.com/forum/viewtopic. ... rt#p143914
http://render.otoy.com/forum/viewtopic. ... rt#p150475
It works pretty well for the most solutions.
Everyone is free to tweak the shader for their own needs.
The size and more can be controlled by the values from the dirtshader, located in the MIX MAT.
The textures are taken from http://www.cgtextures.com
The plugin http://c4dtools.net/chamfer-maker/ is used for one scene and
you need to use your own HDRI for the scenes.
djart