An extra set of wheels which will convey the folded paper to the output bin, currently under construction.
Some parts of the unfinished output bin and stacker. The large wheel, driven by its own motor, will rest on top of the stacked papers, preventing them from springing open and helping to transport each new paper onto the top of the stack. A mechanism is being planned that will lower the bottom of the bin as the stack grows, keeping the top of the stack at a constant height.