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;
• and
• 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 airflow path exits into the internal circulation path;
• and
• the make-up airflow path comprises a make-up airflow generator configured to urge the inflow of make-up air via the air inlet at a flow rate so as to replace the air expelled from the exhaust outlet;
• and
• operating the make-up airflow generator to provide a flow rate of the make-up air so as to replace the air being expelled, in use, from the exhaust outlet.