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Fiberglass casts were introduced in the 1980s or 1990s. The curing time of a fiberglass cast is far shorter than plaster of Paris, letting the patient walk with an outer boot within an hour of application. Because casts made of fiberglass have lower breakdown rate and do not impede patient mobility, this material has become the choice for TCC.
Traditional cast liners are made from cotton or synthetic materials, which help absorb sweat and keep the skin dry. However, in modern casting, fiberglass or polyester liners are often used, offering greater durability and comfort. Some liners are specifically designed to be waterproof, allowing patients to bathe or swim while wearing their casts.
Diagram of spray-up process. Spray-Up also known as chop method of creating fiberglass objects by spraying short strands of glass out of a pneumatic gun. This method is used often when one side of the finished product is not seen, or when large quantities of a product must be made cheaply and quickly with moderate strength requirements. [1]
Elektrische Gipssäge, by Ortopedia, Kiel, Germany. A cast saw is an oscillating saw used to remove orthopedic casts.Instead of a rotating blade, cast saws use a sharp, small-toothed blade rapidly oscillating or vibrating back and forth over a minimal angle to cut material and are therefore not circular saws. [1]
The component-making process involves building up a component on the fiberglass mold. The mold is a negative image of the component to be made, so the fiberglass will be applied inside the mold, rather than around it. As in the mold-making process, release agent is first applied to the mold. Colored gelcoat is then applied.
Once the first layer of thin film is appropriately solidified, secondary features can be added to the product such as braided or coiled wire, laser-cut hypotubes or engineered metal reinforcements to prevent kinking, or imaging targets specific to the intended medical application. Multiple casting steps can then be repeated to encapsulate the ...
Glass fibers have been produced for centuries, but the earliest patent was awarded to the Prussian inventor Hermann Hammesfahr (1845–1914) in the U.S. in 1880. [3] [4]Mass production of glass strands was accidentally discovered in 1932 when Games Slayter, a researcher at Owens-Illinois, directed a jet of compressed air at a stream of molten glass and produced fibers.
AutoCAST uses geometric reasoning for automating the design of casting methods elements – cores, mold cavity layout, feeders, feed aids and gating channels. Fast and intelligent simulation technology is employed to visualize mold filling and casting solidification in near-real time.