Reusable spool (1 kg filament)
250 g empty spool
Manufacturer source · Nominal filament: 1000 g
Bambu Lab lists the reusable spool at approximately 250 g. Weigh your own empty spool when precision matters.
Makeratory Resources / Empty spool weights
Bambu Lab empty spool weight
Use these sourced tare weights to estimate how much filament remains on a Bambu Lab spool. Spool designs and production batches can change, so weighing your own empty spool is still the most precise method.
How to calculate filament remaining
Weigh the loaded spool, then subtract the empty-spool tare weight. For example, a loaded spool weighing 720 g with a 220 g empty spool has about 500 g of filament remaining.
Track every Bambu Lab spool you own
Makeratory keeps each spool’s remaining weight, material, color, location, and cost together so you can see what is available before planning the next print.
Read the filament inventory guide → · See Makeratory filament features → · Start a free workspace →