This is the EDC metal container. It has a nice rubber gasket to keep it water tight, and the price is quite reasonable ($6.50 ea at the time I'm writing this summary):
All that's left is to print my stl so your ledger doesn't knock around inside it. If you have a small felt pad (used for furniture), you might want to add it to the lid of the container.
Adjust the print size as needed (should your tolerances be different than mine).
I printed mine with 4 layers top and bottom, zero infill. 0.6mm nozzle with 1.2mm extrusion width, but I don't think any of these settings matter. Print it however you want, it should be fine.
The author marked this model as their own original creation.