In additive manufacturing, what does the term 'layering' refer to?

In additive manufacturing, 'layering' specifically refers to the process of building up a part layer by layer from a digital model. This technique is fundamental to additive manufacturing as it distinguishes it from traditional subtractive manufacturing methods. Each layer is a thin slice of the model that is sequentially added, allowing for complex geometries and structures that may be difficult or impossible to achieve using conventional methods.

This process begins with a digital design, which is translated into layers by slicing software. Each layer is printed one at a time, often using various techniques such as fused deposition modeling (FDM) or selective laser sintering (SLS), depending on the materials and technology employed. Once all layers are deposited, the part is complete, showcasing the unique advantages of additive manufacturing, such as design flexibility and material efficiency.

The other options describe concepts that are relevant to manufacturing but do not define the specific process of layering in additive manufacturing, making them less applicable in this context.