If you don’t have a fancy-schmancy printer that tracks filament usage and warns you if you don’t have enough filament left on the currently-loaded spool to complete the print, this is how you know. You can even double-check while it’s printing, like I do in this video.
This is why you should always keep a kitchen scale and one empty spool of all the filament brands you use.
Low tech but useful. I figured I’d share.
Yes, it’s obvious. But maybe it’s useful to those who didn’t think about it? Sometimes the most obvious things are the easiest to miss.
I’m sorry you feel so negative about it.