A simple clip, fits on all my available spools (3 mm thick and for 1.75 mm filament). You can download different designs, I will provide some examples for most common materials and temperatures. All the files are the same, just different text on the top side.

Print settings (takes about 15min):

• 3g of PETG
• no supports
• infill 15%
• I used the 0.2mm Standard Profile from Bambu Studio (printed on P1P)

Have fun printing :D

The link is from Amazon affiliate program