Which of the following are common bed adhesion materials used in FDM printing?

Blue painter's tape and hairspray serve as effective bed adhesion materials in FDM printing due to their specific properties. Blue painter's tape provides a textured surface that helps the filament adhere better to the print bed while also allowing for easier removal of the finished print. The tape's surface also has a degree of stickiness that enhances adhesion during the printing process without being overly difficult to detach afterward.

Hairspray, when applied to the print bed, creates a sticky layer that helps the filament stick as it cools and solidifies. It is commonly used because it is widely available and can be effective for various filament types. The combination of both blue painter's tape and hairspray results in a reliable method for achieving good bed adhesion, reducing the likelihood of warping or detachment during printing, which is a significant concern in FDM processes.

The other options might not provide the same level of effectiveness or practicality in achieving proper adhesion in FDM printing setups.