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I'm trying to model thisenter image description here, which is the internal mold of a seashell. I use the Curve Extra addons to make a spiral and a bevel the curve with a circle. The thing is that the diameteris supposed to get thinner and thinner, and I don't know how to do it but manually (and it's not very good beacause I can't tweak the parameters. Any help welcome ! Thanks a lot !

Ben
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Preferably after you enable the curve bevel, so you can see in real time the effect, ⭾ Tab edit the curve, select a point on one side, O enable proportional editing, ⎇ AltS scale the radius, and $\color{#888}{█}\color{green}⬆\color{#888}{█}$ mouse wheel up to increase the influence range:

On the GIF above you can perhaps notice how the curve doesn't thicken nicely along its path, this is because the "Connected" option was not enabled, consider enabling it, as well as try other falloffs:

Markus von Broady
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  • Hi ! (and I noticed I was to focused on explaining my issue and didn't say hi, how rude, sorry) Thank you very much, this is exactly what I was looking for! I didn't know about the influence range – Ben Oct 16 '22 at 11:26