Garden City Plastic manufactures millions of square seedling tubes annually. These were being manually stacked into stacks of 50, before being put into bags. At the production rates required, this was tying up one operator for almost half their time, adding considerably to the unit cost of the tubes, and threatening the viability of the product. The solution had to be capable of easily being moved from one machine to another as dies were moved from machine to machine. The design also had to be scalable to suit other designs of tubes that had similar properties.