20L DryBox Spool Holder–A1 mini Ready

⭐ Trust Statement

This is not a one-off prototype filled with hidden pitfalls that require beginners to repeatedly test, adjust, and fix.

This is a mature structural solution that has been commercially sold, continuously refined, and long-term validated.

Compared to many typical open-source designs, this system has been thoroughly verified:

• No print tolerance traps
• No assembly issues caused by dimensional inaccuracies
• No repeated sanding or clearance adjustments required
• No hidden structural interference

Print it. Assemble it. Use it long term.

🧩 Model Description

This is a 3D printed spool holder system specifically designed for 20L airtight storage boxes.

The structure fits precisely inside the box, maximizing internal space while combining dry storage and smooth filament feeding in one integrated solution.

• Precisely fitted for standard 20L airtight boxes
• Fully printable on A1 mini without splitting parts
• Optimized material usage (approx. 270g) and print time (approx. 8.5h)
• Compatible with any spool up to 69mm width (including Bambu spools)
• 608 bearing rolling system for smooth and stable rotation
• Reserved space for modular desiccant containers for easy maintenance and desiccant replacement

Designed for stable, long-term use — not just display.

⚙️ Assembly Requirements

• 16 × 608 bearings (printable bearing option supported)
• M3×8 countersunk screws (under 50 pcs)
• 4 × through-wall pneumatic fittings (M6) with matching nuts

Modular structure with clear assembly logic for easy maintenance and replacement.