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Hello community, Some months ago I asked how to achieve this kind of effect Blackpixel user at sidefx forums did an awesome job with a mantra shader, at that time I was just learning the basics so I get stuck trying to understand, here is the post if someone wants to check out ( https://www.sidefx.com/forum/topic/44970/ ) I'm uploading the file that blackpixel did, all in mantra with shader builder, now that I learn the basics of shader builder I'm trying to really understand what he did, here are my thoughts: So he take a worley noise (4 points) and split up to 5 fit ranges, one is set to the refraction, he multiplies 2 to get the displacement, then he does several multiply with colormix, is this to get the colours on the borders? I tried to do it myself from scratch (attaching the hip too) with a similar but not the same result, I started adding one by one to see what is doing but I can't figure out yet. My main cuestion is, from a designer point of view, lets say I want to create a shader that is black/milky (btw he isn't using SSS but it looks like), how should I think to say: this will be the plastic hole, this will be the border one, this will be the main surface, I guess he's doing all of that dividing the worley in fits right?, mantra is kinda scary yet so powerful. Sorry for the long read Cheers! worley_holes_blackpixel.hip worley_holes_caskal.hipnc