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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

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    $\begingroup$ The only places IOR is really used is in the Glass shader I think, for transparent materials. IDK how to implement it for purely surface materials, if indeed that possibility exists. $\endgroup$ – VRM May 26 '15 at 23:28
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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

http://www.chocofur.com/6-shadersamptextures.html

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  • $\begingroup$ I should have known that . . . you have a better memory :) $\endgroup$ – VRM May 27 '15 at 9:55
  • $\begingroup$ That sounds good and I tried it but at 2.5 it give a really bad output. Why? $\endgroup$ – Douglas E Knapp May 28 '15 at 11:25

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