Adding dirt to edges

[pgatsky]

Hi all

Im currently trying to add a dirt mask to the edges of a metallic object so I can add imperfections and scratches just to the edges. Ive more or less followed some tuts online but am still having problems. Being a novice with octane im hoping that someone can show me where ive gone wrong with my nodes setup.

Thanks

PG

[frankmci]

If I understand what you are saying, it looks like you just have your two material inputs into the Mix inverted. Swap their inputs and I think you'll get what you expect.