Cupping

{
  "id": "MLC-T-ADM-000088",
  "term": "Cupping",
  "field": "Additive manufacturing and 3D printing",
  "definition": "A defect in vat photopolymerization where a hollow, cup-shaped region forms on a part, trapping liquid resin. This trapped resin creates suction forces during the layer peeling process in bottom-up printing, which can deform or rupture the walls of the printed object. It typically occurs in geometries with enclosed or concave features.",
  "url": "https://mlchart.com/terminology/additive-manufacturing/cupping/"
}