21700 Cell Holder / Spacer

I printed it with the cheapest PETG i could find and it held up pretty well, I used PETG because of flexibility because i wanted the cells to sit snugly inside the holders. Maybe PLA also works but havent tried yet.
Ive build a rather large 12s4p pack with them and hammered the cell holders with a piece of wood between them on the cells and they held up pretty good, no signs of cracks.
If u wanna build arrays like I did just put the individual holders in the array youd like them to be.

I would recommend to print them so the restrainers which stop the cells from going to far in are touching the build plate and then use some support material to ensure an even print.