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There are six main categories of manufacturing processes, forming, casting, molding, joining, machining, and additive manufacturing.

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Each category encompasses various techniques with distinct characteristics, advantages, and disadvantages.

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Understanding these differences is crucial for selecting the most appropriate manufacturing process for a given application.

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Forming involves applying forces or pressure to plastically or permanently deform the material to produce the desired shape.

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It can produce parts with high strength, durability, and production rates.

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It can also work with a wide range of materials, including metals, polymers, and composites.

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Forming includes two types of forming, hot working and cold working, which classifies the temperature of the material when undergoing forming.

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However, forming is more limited in terms of shape complexity when compared to other processes.

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Casting is a primary shaping process, involving pouring liquid material into a mold to form the desired shape.

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This process is mostly commonly used for metals, and is suited for a wide variety of shapes and production volumes.

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While some types of casting can achieve tight-dimensional tolerances with good surface finishing, many require a secondary or post-processing step.

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Such as machining or polishing to meet product requirements.

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Molding is another category of manufacturing processes that uses molds to shape materials.

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It is most commonly used for plastics, where molten or softened material conforms to a mold to create precise repeatable parts.

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There are many types of molding processes, each optimized for specific types of products, and although plastics are the most common material,

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others such as rubber, ceramics, or even composites and metals can also be molded.

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Like casting, this process typically requires significant upfront investments in tooling.

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Machining is a material shaping process that cuts away unwanted material with a tool.

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It is often used as a secondary process to refine a part made by another process, though it can be used to create parts as well, if necessary.

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Machining is highly versatile and can be applied to a wide range of materials, including metals, plastics, and wood, making it an essential process in many industries for producing precise and functional parts.

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However, it can be time-consuming, require skilled labor, and generate considerable material waste, which all drive up costs.

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Additive manufacturing, also referred to as 3D printing colloquially, enables the creation of three-dimensional objects through successive addition of layers of material.

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It allows for intricate designs that traditional manufacturing processes cannot achieve while minimizing material waste.

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It can process a wide and ever-growing variety of materials, and is especially valuable for rapid prototyping, custom, or low-volume production.

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Lastly, products frequently require combining multiple separate components to form the final commodity.

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This process is called assembly, and can range from simple snap fits that press together to intricate projects like airplanes that require thousands of parts.

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There are a large number of joining processes to pick from, including welding, bolting, adhesive bonding, and more.

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The right joining process picks a balance between cost, efficiency, serviceability, and performance.

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Thank you for watching! For more information, please check out CustomPartNet Process Selector Tool for a quick and easy way to guide your process selection journey.