Chinese 3D printing specialist SUNLU has developed a new reusable spool for 3D printing filaments. This represents a durable alternative to conventional plastic and cardboard spools. The new design should not only reduce waste, but also improve the use of high-temperature filaments.
Many 3D printers use filaments that are supplied on disposable spools made of plastic or cardboard. These often end up in the trash after use or are unsuitable for reuse. SUNLU’s third-generation reusable spool is based on a durable design that can be refilled several times.
Compared to cardboard reels, which can absorb moisture and deform, the new reel offers greater durability. It remains dimensionally stable and prevents problems such as increased frictional resistance, which can occur with filament guiding systems such as the AMS (Automatic Material System). The design also improves air circulation, which is particularly beneficial when drying hygroscopic filaments such as PA6 or PA12 CF.
In addition to sustainability, the spool offers practical advantages for demanding printing materials. The design can withstand higher temperatures and is compatible with filaments such as PC, ABS, PA6 and PA12 CF. This makes it suitable for users who need to dry their materials before printing to avoid moisture problems.
For better handling, the spool has an integrated cable tie system that holds the filament in place and prevents tangling. In addition, a built-in weight indicator facilitates precise control of the remaining material supply.
The reusable spool is fully compatible with SUNLU’s filament dryers, but can also be used in other 3D printing setups.
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