Filament Scales Adapter / Spool Base

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Print out the part using your preferred settings with about a 20% infill percentage. After printing, place it on your digital scales and reset them to zero. Then, weigh the filament spool while it's attached to the printer. Make note of its weight so you can calculate the total gross weight of the spool including the filament later. In my case, this weight was 1225 grams. By weighing the spool again after printing a couple more parts, you can easily determine how much filament has been used and how much is left. For example, in my situation, I calculated that 171 grams had been used by subtracting 1054 from 1225. This meant there were 829 grams of filament remaining, enough for plenty of additional printing fun.