This spool adapter allows you to use non-Bambu filament spools on the Bambu A1 Mini by providing a snug and centered fit. The design locks into the spool core and keeps the filament aligned during printing, reducing tangles and drag. Prints fast and installs without tools. I only printed 1 size (outer).

Features

• Compatible with most 1kg & 750g third-party spools
• Centering hub for smoother unwinding
• Lightweight and efficient design
• No screws, glue, or supports required
• Printable on A1 Mini in one session

Print Recommendations

• Material: PLA / PETG
• Layer height: 0.2 mm
• Infill: 15–25%
• Orientation: Front side down
• No supports required

Bill of Materials

• 3D printed parts only
• No hardware required
• Use with your existing filament spool & A1 Mini

Notes
Make sure the inner bore of your spool is clean and free of debris before installing the adapter. For tighter fit, re-print with slightly higher flow or reduce hole clearance by 0.1–0.2 mm.