Centauri Carbon: Internal "Dry-Box" Spool Holder

Tired of PETG stringing and bulky external attachments? This Internal Spool Holder is the ultimate quality-of-life upgrade for your Centauri Carbon, designed to keep your filament dry and your workspace clean.

Why use an internal holder?

• Active Moisture Control: By placing the spool inside the heated chamber, you utilize the ambient heat to keep materials like PETG dry during long prints. This significantly reduces stringing and improves surface finish.
• Ultra-Compact Design: Say goodbye to the protruding side-mount. This mod tucks the spool neatly inside, making the printer much easier to fit into tight enclosures or shelves.
• No Hardware Required: The holder features a clever snap-fit / interlocking design. It stays securely in place without needing a single extra screw.
• Fully Reversible: Want to go back to the original setup? No problem. The system pops right out, leaving your printer in its original state.

🔧 Installation Steps

1. Relocate the Filament Sensor: Unscrew the two support screws from the external shell and move the sensor to the inside of the printer.
2. Insert the Holder: Simply snap the printed parts into position using the built-in interlocking system.
3. Load & Print: Route your filament through the internal sensor and you're ready to go!

⚠️ Important Compatibility Note

To ensure enough clearance within the chamber, this holder is compatible with spools up to 7.5 cm (75mm) in width.

• Most standard 1kg spools (Bambu, Sunlu, Esun, etc.) fit perfectly.
• Please check your spool width before starting. If you have a wider "monster" spool, you can temporarily switch back to the stock holder in seconds.

Print Recommendations

Since this part lives inside the heated chamber, I highly recommend printing it in PETG, ASA, or ABS to ensure it maintains its structural integrity over time.

Tested & Proven: I’ve run extensive tests with this setup, and it works flawlessly while keeping the printer's footprint minimal. Enjoy those clean, dry PETG prints!