SUNLU 4KG PLA Plus Filament Refill 1.75mm, 1000g PLA+ Filament Bundle 4 Packs

The SUNLU 4KG PLA Plus Filament Refill Bundle is a collection of four 1-kilogram spools of 1.75mm diameter PLA+ filament, designed for FDM 3D printers. This refill format is engineered to be used with reusable spools, specifically the SUNLU 2025 new spool, Bambu Lab spool, and other compatible brands, offering a more sustainable printing solution by reducing plastic waste. The filament itself is a PLA Plus formulation, which is significantly stronger than standard PLA, with improved layer adhesion, brighter colors, and resistance to common printing issues such as clogging, bubbling, tangling, warping, and stringing. It is neatly wound to ensure smooth, efficient printing. The product is compatible with most FDM printers and multi-material systems like the Bambu Lab AMS and AMS Lite. Recommended printing settings include a nozzle temperature between 210°C and 235°C (410°F - 455°F) and a heated bed temperature between 55°C and 65°C (131°F - 149°F). SUNLU is a manufacturer of a wide range of 3D printing products, including filaments, printers, dryers, and accessories.