No...how do you keep them from swelling more than 0.5mm?How do I space them apart? I use the terminal adapters that I designed and 3D printed. They provide about 2.5mm of spacing between each cell, while still holding two cells together so they don't move.
I have also just added a 1/4 hole through the side so that I can then fix all the cells together so they don't separate. I'll use a 1/4 all thread rod through the length of the battery bank. This is NOT used for compression, just to fix them in place for terminal stress relief.