page_title: Pattern (casting)
hierarchical_section_title: Pattern (casting)
caption_attribution_description: English: Cope &amp; drag (top and bottom halves of a sand mold), with cores in place on the drag. Results: File:SandMoldBronzeAluminium.jpg
context_page_description: In casting, a pattern is a replica of the object to be cast, used to prepare the cavity into which molten material will be poured during the casting process.
  Patterns used in sand casting may be made of wood, metal, plastics or other materials. Patterns are made to exacting standards of construction, so that they can last for a reasonable length of time, according to the quality grade of the pattern being built, and so that they will repeatably provide a dimensionally acceptable casting.
context_section_description: In casting, a pattern is a replica of the object to be cast, used to prepare the cavity into which molten material will be poured during the casting process.
  Patterns used in sand casting may be made of wood, metal, plastics or other materials. Patterns are made to exacting standards of construction, so that they can last for a reasonable length of time, according to the quality grade of the pattern being built, and so that they will repeatably provide a dimensionally acceptable casting.
caption: The top and bottom halves of a sand casting mould showing the cavity prepared by patterns.  Cores to accommodate holes can be seen in the bottom half of the mould, which is called the drag. The top half of the mould is called the cope.
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