What are common methods for enhancing bed adhesion in FDM?

Bed adhesion is crucial in Fused Deposition Modeling (FDM) to ensure that the first layer of the print adheres properly to the build surface, minimizing warping and print failures. Common methods for enhancing bed adhesion include using a heated bed and applying adhesives like glue sticks.

A heated bed raises the temperature of the build surface, which helps the filament adhere better during the printing process. This is especially important for materials that are prone to warping, such as ABS. The heat helps to keep the filament in a softer, more pliable state as it deposits, allowing for better bonding to the surface.

Additionally, applying adhesives like glue sticks can further enhance adhesion by providing a sticky layer for the filament to grip onto. These methods are widely used because they are effective and easy to implement, contributing significantly to the success of the 3D printing process in producing high-quality prints with good first-layer adhesion.

The other methods listed, such as cooling the print bed and reducing print speed significantly, typically do not contribute positively to bed adhesion and can even have the opposite effect. Increasing the color depth of the filament is unrelated to adhesion and focuses instead on the aesthetic properties of the printed object. Thus, option A clearly represents effective techniques for improving