If you are preparing a model for , generating a "solid" piece often means:

If you have a collection of surface sheets that form a closed "box," you can use a Knit or Stitch tool to turn them into a single solid body.

You can save a multi-part assembly as a single part file, which can combine separate bodies into one. 4. 3D Printing Context

If you are using CAD software like or Autodesk Inventor , you can generate a solid piece using these standard methods: 1. Extruded Boss/Base

Set the angle to 360 degrees for a full solid revolution. 3. Converting Existing Data

Ensure the "Thin Feature" option is unchecked to create a solid volume instead of a hollow shell. 2. Revolved Boss/Base