Spacer and Endcaps for Headway 10A LiFePo4 cells

This is a spacer and an Endcap that i designed for my Headway cells. I use 2x6 cells im my model submarine as a substitute for the old 48x LiFePo A123 cells.
The cells are joined together with M6 screws and to prevent electrical shorts i printed these endcaps. To increase mechanical stability the cells are separated by the spacers and stabilized by reinforced tape.