Blender Cycle Instance Node

Just learn how we can instance nodes groups in Cycle. Awesome.

1-Select the part you want to re-use

2- CTRL-G to create a group from selection (TAB to edit the group content. ALT-G to ungroup)

3- You can rename the group and even the connections in the right panel

4- In another shader, input a group a pick the one you want.

5- Done!