Hey everyone!
Today I give you another freebie :D! This one is on compositing, but specifically making hot metal glow an react to heat. I actually made this for a friend a few nights ago, who didn't know how to separate one material out of everything for compositing and I made this for him and he showed me a great way of making electricity or bolts (however you want to phrase it).
Just to show you what the file makes, you can
check this animation.
But for the sake of speed, here we have composit...
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