Shell

{
  "id": "MLC-T-ADM-000448",
  "term": "Shell",
  "field": "Additive manufacturing and 3D printing",
  "definition": "The outermost solid layers of a 3D printed part, forming its exterior surface and providing structural integrity. This feature is distinct from the internal infill structure. The thickness of the shell, defined by the number of perimeters or wall lines, directly influences the part's strength and surface finish.",
  "url": "https://mlchart.com/terminology/additive-manufacturing/shell/"
}