I printed another set of test plates out. This time the bottom got a deeper recess to hold the cells more vertical. The top plate got a generous chamfer around the cell recess to help guide the cells into the recess. This set of cell plates was 3x3 as I wanted to see how hard it was to align the top plate to the cells. To my delight, it actually worked very well. I stuck the cells in the bottom plate, aligned the top plate and jiggled it a little and it dropped into place.
