December 2022 Update! I've made a free Blender addon that will make spiral shells even easier to create in Blender. Enjoy! Link to addon video: ---- original video description below --- This tutorial will teach you one method for creating highly customisable spiral shell meshes in Blender. It relies heavily on array modifiers and drivers. I hope you get something out of it! Here's a download link for a .blend file containing the shell with all its drivers, modifiers, etc. IMPORTANT NOTE: When you add the empties (see the 3-minute mark in the video) leave them at the origin. Moving them will break the mesh being constructed. Shells made with this approach: YouTube Peter1504 made an awesome looking shell and included it in the following render: