How do I make steel in cycles using 2.5 as the IOR? 2.5 is the listed PBS IOR of steel but I have no idea how to make a great node metal shader in cycles using this info. Thanks! Douglas E Knapp
The FRESNEL node connected to a the FACTOR input of a MIX node which has for example a DIFFUSE and GLOSSY input will change the reflections depending on the angle that light strikes it.
The FRESNEL node has a panel for the IOR