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I have this so far:

enter image description here

But how can I make it grow increasingly, like a winch would do?

I tried 'Snap' math function everywhere but it doesn't really do much good.

Nodes: enter image description here

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2 Answers 2

Reset to default
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You can add the layer number (index / points_per_layer) to the radius, multiplied by a thickness factor, to offset the rope with each additional layer. Use the snap or truncate node to get a constant offset for each point in the layer, until it snaps to the next.

The Switch node in the modified file below toggles between the simple Truncate behavior (sharp jump between layers) and a smoothed version i made to get a more natural transition between layers. There's a test mesh to play around with this function. enter image description here

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  • $\begingroup$ Whoa! Works like magic :) Thank you so much, incredible. It wasn't that easy a problem after all, I see $\endgroup$
    – Manu Järvinen
    Commented Apr 20, 2022 at 10:16
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The final parametric .blend based on @lukas_t 's answer:

enter image description here

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