Summary

This guide is intended for LG's M50LT cells, and other similar 21700 cells, that have an indented top contact. This recess allows you to push the nickel into a dented form, where it's easy and reliable to spot weld onto the cells. It ideally supports 50 mm wide nickel and 7P configs, but I used it with 30 mm wide nickel since my 30 mm stuff was softer than my 50 mm nickel. I believe the 30 mm wide stuff was annealed.

Anyway. Print it, use it as a guide to cut your nickel, and push the nickel onto the dented form with the end of a sharpie, plastic stick or something like that. It worked great for me.

The two files are 3-wide and 4-wide, labeled based on the width of the nickel flange that can be bent on top of the cells (see second photo).