Bambu Lab Filament Spool Core

This custom-designed inner ring replaces the original cardboard core found in Bambu Lab filament spools, offering a more durable and heat-resistant alternative — perfect for users who regularly dry their filament.

Made from PETG instead of PLA, the ring withstands higher temperatures, making it ideal for use in filament dryers or heated environments. Unlike PLA, which can deform under heat, PETG maintains its shape and structural integrity.

A built-in hole allows for easy securing of the filament end, making rewinding simpler and preventing the filament from slipping out unintentionally.

Additionally, if an RFID chip is present, it can still be used with this ring.

Key Features:

Durable PETG construction for high heat resistance (ideal for filament drying)
Reusable and stable — no more cardboard cores
Built-in hole to secure filament end
RFID chip compatible (chip fits without a dedicated slot)
Precisely fits Bambu Lab filament spools

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