A simple spool holder for Bambu Labs filament refills, remixed from Bambu refill spool. It's assembled like the original – [https://us.store.bambulab.com/products/bambu-reusable-spool?id=40922542178440.](https://us.store.bambulab.com/products/bambu-reusable-spool?id=40922542178440.)

Files include the 2-part spool, a shim to prevent the spool from twisting apart, and a modifier volume to customize the perforation pattern from various infill patterns.

Use the 3mf file which includes the negative volume settings. Otherwise, to configure the negative volume in PrusaSlicer:

1. Right click the spool and “Add Modifier" > "Load…”
2. Select the modifier volume. This part is the same for both halves.
3. To add the modified settings
   1. Right click the modifier volume in the outliner, click “Add settings” and select:
      1. Infill
      2. Layers and Perimeters
   2. Update the following settings for the modifier volume:
      1. Infill:
         1. Fill density: (whatever you want. The photos have 20% density)
         2. Fill pattern: (whatever you want. The photos have Honeycomb)
      2. Layers and Perimeters:
         1. Bottom solid layers: 0
         2. Top solid layer: 0