Since its introduction in 2025, the SUNLU Third Generation Reusable Spool has established itself as a true favorite among many 3D printing enthusiasts, especially for users of the Bambu Lab AMS and AMS Lite. Numerous makers who have switched from traditional cardboard or disposable spools to this system report unanimously: when combined with SUNLU Refill Filament, the spool impresses with its durability, sustainability, and significantly easier filament management.
If you are tired of throwing away empty spools, dealing with moisture problems, or struggling with tangles during multi-color prints, the combination of the SUNLU Third Generation Spool and high-quality SUNLU Refill Filament offers a practical, cost-effective, and eco-friendly solution – one that thousands of users already use and value every day.
Why more and more users are switching to the SUNLU Reusable Spool System
Traditional filament spools cause unnecessary waste and frustration. Cardboard spools easily absorb moisture, while many plastic spools end up in the trash after a single use.
The SUNLU Third Generation Reusable Spool (Ø 200 mm × 55 mm) was specifically designed to address these weaknesses. Thanks to its detachable, high-strength construction, it can be easily assembled and disassembled multiple times – ideal for loading SUNLU Refill Filament (spool-less coils).
Many users emphasize how significantly they have been able to reduce their plastic waste as a result. A common comment is: "I used to throw away a spool after every roll. Now I’ve been using the same SUNLU V3 spool for over 10 refills – and it still looks and works like new."
Key benefits according to user feedback – SUNLU Third Generation Spool + Refill Filament
Here are the experiences most frequently shared by users after months, and in some cases over a year, of use:
- Excellent compatibility with Bambu Lab AMS The optimized dimensions and smooth surface ensure trouble-free operation in the Bambu Lab AMS and AMS Lite. Many users report significantly fewer tangles and more stable multi-color prints compared to older spools or cardboard versions. The spool is also well-compatible with Bambu Lab refills.
- Significantly better drying results The multi-hole design significantly improves airflow. Users who regularly dry their filament report faster and more uniform moisture removal – especially with PETG, nylon, and other moisture-sensitive SUNLU Refill Filament. "My PETG prints much cleaner now because I can effectively dry the entire spool without removing the filament."
- Easy filament changes thanks to zip tie slots The integrated zip tie mounts reliably prevent tangling during color or material changes. AMS users, in particular, praise how easy it is to secure the filament end of a SUNLU Refill Filament and switch it quickly.
- Precise remaining filament tracking The built-in weight scale, combined with slicer data, allows for accurate monitoring of the remaining filament, helping to avoid print failures in large projects.
- High durability and heat resistance The spool is made of robust, eco-friendly materials and withstands repeated use, drops, and drying cycles without warping. The clear temperature warning helps to further extend its lifespan.
- Clear print parameters on labels The improved stickers show recommended nozzle and bed temperatures for various SUNLU Refill Filament types (PLA, PLA+, PETG, etc.), making it especially easy for beginners to get started.
Cost savings and environmental protection that users appreciate
The combination of a reusable spool and SUNLU Refill Filament provides clear financial and ecological advantages. Refills are generally cheaper per kilogram than pre-spooled filament, and using a high-quality spool multiple times noticeably reduces both costs and plastic waste.
Many users report savings of several euros per roll and a much clearer environmental conscience. "I have already used over 15 kg of SUNLU Refill Filament on just two Third-Generation spools – the savings add up quickly."
Who is this system particularly worth it for?
- Bambu Lab AMS users looking for reliable, tangle-free operation
- Eco-conscious makers who want to minimize waste
- Frequent filament changers who value fast and tangle-free handling
- High-volume printers who want to reduce costs long-term
- Users who regularly dry their filament (thanks to the optimized hole design)
Regardless of whether you are printing functional parts, prototypes, or artistic models – the combination of the SUNLU Third Generation Spool and SUNLU Refill Filament consistently receives positive feedback regarding reliability and ease of use.
Technical specifications – SUNLU Third Generation Reusable Spool
- Dimensions: Ø 200 mm × 55 mm
- Material: High-strength, water-repellent, and heat-resistant eco-friendly polymer blend
- Compatibility: Bambu Lab AMS/AMS Lite, most standard FDM printers, spool-less Refill Filament
- Special features: Detachable construction, multi-hole drying, zip tie slots, integrated weight scale, clear parameter labels
SUNLU Refill Filament is available in popular materials such as PLA, PLA+, PETG, and other varieties, and is easy to load onto the reusable spool.
Practical user tips for optimal results
- Place the refill coil on the spool with the plastic ties still attached and spool it carefully.
- Use a filament dryer to make the most of the multi-hole design.
- Secure the filament end with a zip tie when it is not in use.
- Always check the weight scale before starting large prints.
Many users recommend buying several spools at once to have different colors or materials ready simultaneously.
Ready for better filament management?
Those already using the SUNLU Third Generation Reusable Spool benefit more with every subsequent SUNLU Refill Filament from a cleaner, more reliable, and significantly more sustainable 3D printing experience.
Discover the complete range of SUNLU Refill Filament and pick up additional Third-Generation spools as needed. Most users start with a few spools and expand their collection once they have experienced the benefits for themselves.
Have you already tried the SUNLU Third Generation Spool with Refill Filament? Feel free to share your experiences in the comments – we look forward to your report!
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