CAD Models of Mask Insert & Comfort Ear Straps with Laser Cut & Glued Boxes These include 2 mask inserts and 2 types of comfort ear straps (as photographed below). CAD Models for Group Project Prototypeīecause the milling assignment was cancelled, our group decided to mold and cast two CAD models that Eddie and Luke helped to design. The solidified part is also known as a casting, which is ejected or broken out of the mold to complete the process. On the other hand, casting is a manufacturing process in which a liquid material is usually poured into a mold, which contains a hollow cavity of the desired shape, and then allowed to solidify. There are many different techniques for molding materials, just as there are many different applications for each process. Molding is a technique through which a material, often plastic, but also metal, rubber, or powder mixtures is shaped on the outline of a die or mold. A mold is a hollowed-out block that is filled with a liquid or pliable material, such as plastic, glass, metal, or ceramic raw material. The liquid hardens or sets inside the mold, adopting its shape. This itself my have been made using a pattern or model of the final object. Molding is the process of manufacturing by shaping liquid or pliable raw material using a rigid frame called a mold or matrix.
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