A method for controlling the manufacture of articles comprising the steps of a) halting the conveyor 12 based on the presence of articles 3 at a workstation 1 and then allowing processed articles to be returned to the conveyer 12 b) restarting the conveyor in response to a sensor 14 detecting articles have been returned to the conveyor and that articles to be processed have been removed c) moving the returned articles on the conveyer until it is again stopped in response to a sensor that signals the articles have reached the next workstation. Ideally the conveyor is an endless belt conveyor.
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