Valid solid model

{
  "id": "MLC-T-ADM-000403",
  "term": "Valid solid model",
  "field": "Additive manufacturing and 3D printing",
  "definition": "A digital 3D representation of an object that is mathematically complete and unambiguous, with no gaps or self-intersecting surfaces. The model must be a fully enclosed volume, often described as being 'watertight' or 'manifold', meaning every edge is shared by exactly two faces. Slicing software requires a valid solid model to correctly generate the toolpaths for each layer of an additive manufacturing build.",
  "url": "https://mlchart.com/terminology/additive-manufacturing/valid-solid-model/"
}