Reusable Filament Spool – Cardboard Spool Conversion (200mm, RFID Ready)

A reusable, two-piece locking filament spool designed to convert damaged or dusty cardboard spools into durable plastic — or function as a standalone filament spool.

Originally created to solve real-world issues with Creality HyperPLA cardboard spools inside the Creality CFS, this design keeps cardboard dust out of your system while restoring perfect spool geometry when shipping damage strikes.

To address real-world variations in cardboard hub sizing, optional 82 mm add-on hub rings are included to ensure a secure, wobble-free fit when cardboard side panels are removed.

📌 QUICK OVERVIEW

Purpose: Reusable plastic filament spool
Compatibility: Creality HyperPLA cardboard spools & standard 200 mm spools
Diameter: 200 mm (matches original HyperPLA spools)
Hub Options:

• 80 mm standard hub

• 82 mm add-on rings (included) for oversized cardboard cores
  Design: Two-piece twist-lock spool halves
  Use Case: Cardboard conversion or standalone filament spool
  RFID Ready: Integrated RFID tag location
  Printing: No supports required
  Assembly: Tool-free twist-lock

🧠 PROJECT BACKGROUND

Cardboard filament spools are lightweight and eco-friendly — but they don’t always survive shipping. Bent edges, crushed hubs, and cardboard dust can cause feeding issues, especially in enclosed multi-material systems like the Creality CFS.

To make matters worse, cardboard hub diameters are not always consistent, particularly once the side panels are removed.

This reusable plastic spool was designed as a drop-in solution:

• Restore damaged cardboard spools

• Eliminate cardboard dust inside your CFS

• Compensate for real-world cardboard hub size variation

• Maintain original spool dimensions and fitment

• Avoid re-spooling filament by hand

It also works perfectly as a standard reusable filament spool, even without cardboard cores.

📐 DESIGN DETAILS

• 200 mm outer diameter to match original Creality HyperPLA spools

• Two-piece twist-lock design for fast, tool-free assembly

• Converts cardboard spools or functions as a standalone spool

• Standard 80 mm hub for typical cardboard cores

• Included 82 mm snap-on hub rings for oversized or inconsistent cardboard hubs

• Hub remains centered and secure even when cardboard side panels are removed

• Integrated RFID location for:

  • Reusing Creality RFID tags

  • Adding your own custom RFID or NFC tags

• Open spoke pattern reduces material usage while maintaining rigidity

• Optimized for smooth rotation in the Creality CFS and similar systems

• Four directional filament anchor holes (two per side) allow secure filament starts when loading filament onto the hub when using as a stand alone spool.

🔧 PRINTING NOTES

Printed examples shown were completed using PLA, but PETG or ABS may also be used if preferred. Keep your use in mind when deciding.

Recommended settings:

• 0.4 mm nozzle

• Standard layer heights (0.2 mm works well)

• Default wall and infill settings

Print orientation:

• Print both spool halves flat on the bed

• Print hub rings flat

Supports:

• ❌ Not required

Assembly tips:

• If your cardboard hub fits snugly, use the standard 80 mm hub as-is

• If the hub feels loose or undersized after removing side panels, slide on the 82 mm add-on rings before final assembly

📦 ALSO INCLUDED / FEATURES

• 82 mm hub add-on rings to compensate for cardboard core variations

• RFID-ready hub location for advanced filament tracking setups

• Designed specifically with Creality CFS compatibility in mind

• Works great for users who want to avoid cardboard dust contamination

• Ideal for long-term filament storage or active printing setups

🧾 VERSION INFO

v1.0
Initial release focused on Creality HyperPLA compatibility, cardboard conversion, and CFS-safe operation — including optional 82 mm hub rings to address real-world cardboard size variation.

Future updates may include:

• Additional hub diameters

• Alternate RFID positioning options

• Brand-specific variants if there’s interest