Weld-Less (weldless weld-free weld free) 18650 Battery Build System Version 2

This is a new version of my weld-less 18650 battery build system (on Thingiverse), incorporating lessons learned from the first attempt. I'm leaving that one up as I know a few people downloaded it, but it won't be updated any longer.

Improvements include:

1) Monolithic bottom plate to make plywood backer drilling, layout, and nickel strip placement easier.

2) Bottom plate versions for both silicone cabinet bumpers or 3D printed flexible filament (such as TPU) ones.

2) Jig for easier backer drilling.

3) Tapered top strips to ease assembly.

The bottom plate could have hundreds of possible sizes, so I've included the Fusion 360 file required to generate them (as well as one for the top strips and drilling jig). If you aren't familiar enough with Fusion 360 to do so and need a specific size, you can request it and I'll try to add the files if I've got a spare moment.

The system is designed to use standard 20 mm nickel strips. I tested three brands and they all fit, but of course it's possible some might not.

I recommend using a filament with higher temperature resistance such as PETG or ABS. Walls are 1.567 mm thick, so ideally use a line width that divides evenly into it. Supports are not necessary.

The design presumes a backing of plywood on each side so that the tension bolts can press the nickel strips against the ends of the cells without having beefy printed parts. I've also tried fender washers for this purpose and they work, but I've only tested groups of four cells, so an odd numbered pack (in either series or parallel) would require another solution to handle the extra cells.

I'll have to get around to a build document for this version, but figured I'd upload the files now for those who are more experienced with 18650 battery building in general and won't require a step-by-step guide. For now, here are the instructions for the old version. Couple differences, but it shouldn't be too hard to figure out. Please feel free to message me with questions or ask in the comments.