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Evaporative-pattern casting is a type of casting process that uses a pattern made from a material that will evaporate when the molten metal is poured into the molding cavity. The most common evaporative-pattern material used is polystyrene foam. [1] The two major evaporative-pattern casting processes are: [1] Lost-foam casting; Full-mold casting
Full-mold casting is an evaporative-pattern casting process which is a combination of sand casting and lost-foam casting. It uses an expanded polystyrene foam pattern which is then surrounded by sand, much like sand casting. The metal is then poured directly into the mold, which vaporizes the foam upon contact. Full-mold casting
Lost-foam casting (LFC) is a type of evaporative-pattern casting process that is similar to investment casting except foam is used for the pattern instead of wax. This process takes advantage of the low boiling point of polymer foams to simplify the investment casting process by removing the need to melt the wax out of the mold.
Paisley or paisley pattern is an ornamental textile design using the boteh (Persian: بته) or buta, a teardrop-shaped motif with a curved upper end. Of Persian origin, paisley designs became popular in the West in the 18th and 19th centuries, following imports of post- Mughal Empire versions of the design from India, especially in the form of ...
Storm Pattern – The Storm pattern style includes a central rectangle or square that represents the centering of place in the universe or at home, and incorporates a broader color palette. This is surrounded by four additional rectangles that represent the four sacred mountains of the Navajo along with zig-zag lightning forms.
Foamcore, foam board, or paper-faced foam board is a lightweight and easily cut material used for mounting of photographic prints, as backing for picture framing, for making scale models, and in painting. It consists of a board of polystyrene foam clad with an outer facing of paper on either side, typically white clay-coated paper or brown ...
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