Filament holder with weight sensor

This is a filament holder with a load cell integrated to weigh the filament spool. I thought this would be a fun way to weigh the filament to ensure I have enough for a print without having to resort to a scale. Assembly BOM, tools required and assembly comments are noted at the bottom.

Summary:
Pros
It works. I've tested it on several prints and the load cell is about +/- 0.05 lbs. This will depend on how well you've calibrated the load cell.

Cons
1) Need help with this... if I pow