hello! How can I realize a spiral with Dimension like picture attached? Tks for answers.
I don't think you can directly in Dimension since it's not part of a standard shape, you will need to build it yourself, Using a modeler (Dimension is just a stager, so more limited) . You can try using the 3D features within Illustrator, or use a bona fide modeler, such as Substance Modeler, or Blender.
Another way would be to find ready made models, such as this one, I found on the free section of Adobe Stock
but you can also try in Adobe Substance assets
or one of the many platform where you can buy .obj models
thats a standard 3/4 spring you can make easy in Blender