Runners, Repeaters, and Strangers - The RRS principle.
A runner is a product having sufficient volume to justify dedicated facilities or manufacturing cells.
A repeater is a product with intermediate volume, where dedicated facilities are not justifiable. Repeaters should be scheduled at regular slots.
A stranger is a product or family with a low or intermittent volume. They have the lowest priority.
Here a powerful metaphor to remember!
Runners are the heartbeat that goes on all the time.
Repeaters are like the breakfast, the lunch, and the dinner.
Strangers are like a dinner out with the friend.
Remember it to develop the same habit in your company.
The best way to be Lean is starting from Runners!