I want to make a plane look like its been decaying with rust holes in the jungle for decades like this picture.
I think I remember seeing an add-on that could do this, I could be wrong, but any help is greatly appreciated.
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$\begingroup$ You can use this method: blender.stackexchange.com/questions/76389/… Also you don't need to paint mask, you can use procedural texture for this. $\endgroup$– cgslavCommented Jul 26, 2018 at 21:08
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$\begingroup$ Also: blender.stackexchange.com/questions/45553/… and youtube.com/watch?v=37oBqhjDtBI and basically google "blender cycles rust/damage". $\endgroup$– cgslavCommented Jul 26, 2018 at 21:19
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$\begingroup$ Not at all what I was asking. I want it to be so rusted that it has eating through the metal. I know how to make rust on an object $\endgroup$– Ben SmithCommented Jul 26, 2018 at 21:23
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1 Answer
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Final:
Overview:
Basically you can use the same method as for creating any other rust material with one exception at the end - mix your rust material with Transparent shader trough "rust mask", created beforehand. This will create hard holes in your mesh. I've used Greater Than math node to harden texture.
There is downside to this method. You can't add thickness to the mesh. If you add Solidify modifier, the edges will be empty. You can try to work around this with Volume texture but it could be an overkill.
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$\begingroup$ Any way to work around the musgrave texture it causes blender to crash every time I use it $\endgroup$ Commented Aug 2, 2018 at 18:48
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$\begingroup$ @BenSmith that's strange... What version of blender are you using? And what OS? I'll try something different. $\endgroup$– cgslavCommented Aug 2, 2018 at 18:50
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$\begingroup$ 2.79 I'm running off CPU I don't have a graphics card in this computer that could be the reason. I even just tried the materials on a cube and it was running really slow. $\endgroup$ Commented Aug 2, 2018 at 18:53
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$\begingroup$ @BenSmith I'm trying to make something without Musgrave. Hold on. $\endgroup$– cgslavCommented Aug 2, 2018 at 18:54
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$\begingroup$ @BenSmith No luck. Only Musgrave gives this nice rim effect. Other textures are just hole/rust, without metal. Do you have 2.79b? Try maybe making it in experimental 2.8. How much RAM memory do you have? This setup is taking something around 60MB RAM with the cube from image. $\endgroup$– cgslavCommented Aug 2, 2018 at 19:09