SUNLU announces reusable print spools

If you 3D print, you already know that every spool of filament brings some level of waste. Changing color causes waste, but you can reduce that with better slice profiles and newer printers. What about the cardboard that print material ships on? Well, SUNLU has been thinking about that as well, it seems. They've recently announced their third generation of reusable spools – a temp resistant plastic spool that can be used in a filament dryer and has a few other tricks up its sleeve – let's take a look.

The new 3rd Generation Reusable Spool is designed to promote sustainability and reduce plastic waste. Unlike traditional disposable spools, this upgraded version is built for long-term use, allowing makers to refill and reuse it instead of discarding empty spools. Its durable construction not only lowers environmental impact but also provides a cost-effective solution for 3D printing enthusiasts and professionals alike.

Beyond sustainability, the SUNLU Reusable Spool is engineered for high-temperature resistance for the filaments PA6, PA12 CF, PC, ABS and Easy PA,  making it suitable for filament drying and storage. Its porous design enhances airflow for better drying performance, while clear usage instructions and built-in labeling areas help users organize and track their materials with ease. Additionally, the detachable structure, integrated cable tie system, and built-in weight scale make filament swaps effortless and allow for precise tracking of material usage. Designed for versatility, the spool is compatible with a wide range of filaments and seamlessly integrates with SUNLU’s filament dryer, making it a practical choice for all 3D printing setups.

The problem with cardboard spools is the potential for fire hazard, or the possibility that the cardboard will distort, which can cause a bad feed when used. These new spools are meant to hold their shape, as well as giving an easy-to-use cheat sheet on how much you have left, as well as a few other bits of info:

Unlike cardboard spools, which absorb moisture and become deformed, SUNLU’s reusable spool maintains its shape and integrity over time. Cardboard options also suffer from high friction, which can cause feeding issues in AMS systems, and their low-strength adhesive construction makes them prone to damage during transport. SUNLU’s spool eliminates these issues with a sturdy, durable design, offering a reliable and sustainable solution for 3D printing enthusiasts.

With its detachable, high-temperature-resistant design, the new SUNLU Reusable Spool is also compatible with filament dryers, ensuring print quality is maintained even with moisture-sensitive materials. SUNLU remains committed to delivering innovative solutions that enhance the 3D printing experience.

So instead of getting a big pile of cardboard, you'll get a strapped bit of filament you can then load onto this reusable spool. It's smart, and it helps reduce our impact on the planet. Instead of just purchasing a new spool, you can save a few dollars per orders and merely order a refill instead.