How do dual-feed systems enhance FDM printing?

Dual-feed systems enhance Fused Deposition Modelling (FDM) printing primarily by allowing for multi-material or color prints with greater versatility. This capability enables designers and engineers to combine different filament types, such as flexible materials with rigid ones, or different colors to create more complex and visually appealing prints.

By utilizing two separate filament feeds, a printer can simultaneously extrude different materials, which expands the range of applications for FDM printing, such as producing models with distinct features or properties in a single print job. This functionality is particularly beneficial in applications requiring specialized materials, like support structures made from soluble materials that can be easily removed after printing, or in creating functional prototypes that incorporate varying material characteristics.

The other options may offer benefits but do not directly relate to the primary enhancement provided by dual-feed systems. For example, reducing overall print time could happen under specific conditions, but that isn't guaranteed with dual-feed systems. Likewise, while a simplified setup may be a goal in certain designs, dual-feed systems often introduce more complexity, not less. Increasing the size of the print bed is a separate hardware consideration that does not inherently relate to the functionality provided by a dual-feed system.