Hello
I didn’t found a way to do this, I have tried via the modifier tab but I made 
So maybe with the geo nodes there is a way?
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Very interesting ! But that’s some shader, I need a geometry nodes (to have a mesh ready to be 3d printed), and I’m not very talented with the geometry nodes 
Don’t see a problem with a shader. You can convert that to mesh, too!
Also, I think your approach with modifiers looks kinda promising.
Too bad you can’t use procedural nodes for the textures in the displacement modifier.
A little noise with distortion, maybe a wave, and you’d be all set
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Also, I was just thinking, depending on what you need it for, maybe just buy some obsidian? 
A rock of that is like 5 $, definitely less than the filament cost i suppose
or just get this hunk and smash it with a sledgehammer
(don’t do that)
Yes a big 
on a glass brick and you have it 
In fact it will be a part of more complex 3d model…
So I’m going to use my “modifier” rock and sculpt it a bit…
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Nice.
These might help you with that
That’s EXACTLY what I need 
Thanks 
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Thank you! I go straight away to download it 
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