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  3. 8. the chapter text describes various materials th

8. The chapter text describes various materials that have been used to produce casting patterns (i.e.,...

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Mechanical Engineering

8. The chapter text describes various materials that have beenused to produce casting patterns (i.e., the tooling that is used toproduce molds), including Styrofoam, soft woods, hard woods,epoxylurethane polymers aluminum, and iron. For each of thesematerials, briefly discuss the pros and cons, considering suchfactors as number of castings to be produced, the size and shape ofthe casting, the desired precision of the cast product patterncost, dimensional stability (both wear and environmental factorssuch as temperature and humidity) susceptibility to damage, abilityto be repaired or refurbished, process limitations, and storageconcerns

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