A hotbed is a component of a 3D printer that is used to keep the build platform at a constant temperature. The hotbed is typically made of a flat, heat-conductive material such as aluminum or glass, and it is heated by a set of resistive heating elements located beneath the surface.
When a 3D printer is in use, the hotbed heats up to a specific temperature, which is determined by the type of filament being used. This temperature is crucial for the success of the 3D printing process, as it helps to ensure that the printed object adheres properly to the build platform.
The hotbed is also important because it helps to prevent warping and other types of distortion that can occur when the printed object cools down too quickly. By keeping the build platform at a consistent temperature, the hotbed helps to ensure that the printed object cools down gradually and evenly, which can help to prevent these types of issues.