Oven for heating an article on a conveyor

A method for drying an article, and/or curing lacquer applied to an article, the method comprising:

• conveying the article on a conveyor through an oven, the oven comprising:
• an air inlet configured to receive an inflow of make-up air into a make-up airflow path;
• an internal circulation path comprising a main heat source, wherein air circulates within the internal circulation path;
• an exhaust outlet configured to expel air out of the oven from the internal circulation path so as to control a quantity of contaminants flowing within the internal circulation path;
• wherein, the make-up air flow path exits into the internal circulation flow path, wherein the make-up airflow path comprises:
• a make-up airflow generator configured to urge the inflow of make-up air via the air inlet;
• and
• a set of make-up air outlets configured to provide make-up air from the make-up airflow path to a first location within the oven that is part of the internal circulation path and a second location within the oven that is part of the internal circulation path, to thereby provide for the make-up airflow path to exit into the internal circulation path,
• wherein:
• the first location is towards an entry point of the conveyor into a heated zone of the oven, and the second location is towards an exit point of the conveyor from the heated zone;
• and
• operating the oven to provide, using the set of make-up air outlets, the make-up air from the make-up airflow path to the first location and the second location.