A simple shim / spacer / widener to make spools wider

Useful for cases when you need to put filament on spool, but it doesn't fit onto spools, or when you want to wind more filament than usual

Tested with Bambu Lab and Sprectrum Refill spools 

For Bambu Lab A1 Mini users: if a spool doesn't properly fit after the adjustment you can use a spool holder extender to accommodate the large spools

Print notes

• No supports needed
• You might need to scale the part up or down a bit to get a proper fit
• I recommend “Aligned” positioning of the seam, there's a small indent on the side that allows slicer to utilise the option and hide the seam better
• The outer wall quite thin in the place where it attaches to bed, if you're having issues with bed adhesion consider adding a brim

Updates log

• 2025-03-17: The model is changed to make it compatible with [https://spectrumfilaments.com/en/refill/](https://spectrumfilaments.com/en/refill/) , snap points added 
• 2025-03-03: Initial version released

Support the author

The model is free to use and published under CC-BY licence, however if you want to support the model author you can do it here: BuyMeACoffee