YOOPAI Pro Box Spool & Hygro Holder + XL Desiccant

Maximize desiccant capacity in your YOOPAI Pro filament box — keep your filament bone-dry and still close the lid.

This spool holder sits in the lid of the YOOPAI Pro Filament Box. That frees up a huge desiccant compartment and uses the lid’s larger footprint: air entering through the cover seals passes through the desiccant first, so your filament stays dry.

✨ Features

• 🌬️ XL desiccant capacity - far more than typical holders
• 🔩 Loose-fit spool cradle - fits most spool brands
• 📦 Lid still closes fully and boxes stay stackable
• 🌡️ Optional hygrometer slot (or print the plain top cover twice) 
• Compatible with the included rectangular hygrometer
• 🖨️ Easy print - about 3 h for one, 5 h 50 m for a double plate

✅ Tested with spools from Bambu Lab, OVV3D, SUNLU, OVERTURE and eSUN.

💡 Why another spool holder? Other solutions didn’t fit this box properly - Bambu spools were too large to close the lid - and none held enough desiccant. Putting the holder in the lid solves both at once, with no compromise (you can still stack the boxes).

🔄 Updates

• 26 June ’26: added lid for the included rectangular hygrometer
• 22 May ’26: improved sliding mechanism and larger lid for a tighter fit
• 18 May ’26: fixed container bottom, consistent wall width, optimized print time

🚀 If this keeps your filament dry, a quick Boost is hugely appreciated - it helps me design more useful prints. Questions or fitment issues? Drop a comment with a photo and I’ll help!

(The filament links shown above are not affiliate links - just FYI.)

Design by OverEngineer on MakerWorld (license: CC0).