A system for heating an object includes an electromagnetic radiation source emitting electromagnetic radiation, a first stage, a second stage, and a third stage. The object is placed into the first stage where it is struck by electromagnetic radiation to thereby heat the object. The object is then transported to the second stage which has a cooling fluid flowing therein. The object moves through the second stage to cool down subsequent to being struck by the electromagnetic radiation. Air and any particulate matter produced by the electromagnetic radiation striking the object in the first stage is transported to the third stage. In the third stage, electromagnetic radiation is used to incinerate some of the particulate matter. The air in the third stage is vented out of the third stage through a filter.

Various embodiments include methods and machines for coating objects with a flowable coating mass, where the coating mass is applied to the objects. Excess applied coating mass is blown off from the objects resting on an upper run of a grid belt and conveyed by moving the upper run in a conveying direction. From undersides of the objects resting on the upper run and conveyed by moving the upper run in the conveying direction, the excess applied coating mass is blown off using at least one first gas jet which is blown out at a first blow-out position, that is arranged below the undersides of the objects and, with respect to the conveying direction, laterally beside the undersides of the objects.