Store boxes on their large side with gravity. I need to store medicine (rectangular) boxes in a rectangular shaped tube. I have to DROP boxes from the top of that tube. they will drop with gravty. boxes are light catoon medicine boxes. Of course, even I drop then as their wide side looks below, because of friction, small hits to the borders of the storage tubes, their position will change while they drop. What I need is a mechanical design of tube, maybe with some shapes or planes in it, so, as boxes drop about 2 meters, at the bottom, theis design will align boxes an in the picture. they should be stored vertivally, not horizontally. any idea will be helpful my friends. thanks.