# Shell ##

Shell The Shell command creates a hollowed out shell from a solid. Shell only operates on simple, solid, manifold polysurfaces. These surfaces are removed and the remainder is offset inward, using the outer parts of the removed surfaces to join the inner and outer parts.

**Steps** 1. Select faces to remove from closed polysurface.\ Leave at least one face unselected. 2. Press Enter when done\ This step specifies which surfaces will be removed to make the shelled object. #### Command-line options -Thickness: Specify the thickness for the shell. -DeleteInput: Specify if the input object will be deleted. -EditThickness: Select a shelled object with History recorded to change the thickness. For more information, please refer to the [Rhino documentation](https://docs.mcneel.com/rhino/8/help/en-us/commands/mesh.htm). --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.rhinoartisan.com/commands/solid/shell.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.