This is a demonstration of how to create a Node Graph in Blender to make and Edge Wear node for use in Cycles.
Step one:
Create the node graph as shown above in Blender’s shader editor. Note the samples input this will be added next.
Step two:
Add a Samples input slot, so you can drive the Bevel node samples from outside the group.
Step three:
TAB out of the node group and then right click on the Samples input and Copy as Driver.
Step four:
TAB back into the node group and right click in the Bevel Node Samples input and Paste Driver.
Finally:
TAB out again and you can use the Edge Mask output to drive a Mix Color node or anything else that you want to drive Edge Wear with.
Download
For those not wishing to make the node themselves I have uploaded the finished asset file to Gumroad: Gumroad Edge Wear Node
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