SUNLU Silk Rainbow PLA Filament Bundle 1.75mm, Multicolor Gradient Shiny Silk 3D Printer Filament, 250g x 4 Mini Spools, Neatly Wound, ±0.02mm Accuracy, Vacuum Sealed

Product Details

• True Rainbow Gradient – Color Changes Along the Print：Unlike dual or tri-color silk filaments that change with viewing angle, this silk rainbow filament shifts colors along the length of the filament. Approximately every 8 meters, new colors appear in your print, creating vivid gradient transitions that make models look dynamic, artistic, and visually stunning.
• Brilliant Silk Shine with Smooth Satin Finish：Formulated with premium silk additives, this filament produces a glossy, satin-like surface straight off the printer. The reflective finish enhances every color transition, making it perfect for display models, figures, vases, cosplay parts, and decorative prints—no post-processing needed.
• 250g Mini Spools – Ideal for Multi-Color Projects & AMS Use：Each set includes four 250g mini spools, allowing you to experiment with multiple gradient prints without committing to large rolls. Perfect for multi-color creative projects and fully compatible with AMS systems when used with a printed 250g spool adapter.
• Precision Wound, Tangle-Free, ±0.02mm Accuracy:Machine-wound for perfectly neat layering, this filament feeds smoothly without tangles or jams. Manufactured to a strict 1.75mm ±0.02mm tolerance, ensuring stable extrusion and reliable performance across nearly all FDM 3D printers.
• Vacuum Sealed for Freshness + Recommended Settings：Each spool is vacuum-sealed with desiccant to protect against moisture. For best results, print at 205–220°C nozzle temperature, 50–60°C bed temperature, and 100–200mm/s speed to achieve optimal shine and gradient color performance.

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Printing YOOPAI PLA

YOOPAI PLA in Silk Rainbow runs on the PLA profile below, and this listing is a 1kg spool. PLA is best suited to everyday prototypes, models, and indoor parts that won't face heat or heavy stress. Brands and even individual spools vary, so treat these as starting points and run a quick temperature tower to lock in the sweet spot for your printer.

Ranges checked against Bambu Lab, Prusament and Polymaker data. Heat resistance is the heat deflection temperature (HDT). Read our PLA filament guide for bed adhesion, drying, troubleshooting, and material-specific tips.

Nozzle Compatibility

This is an unfilled plastic, so it is not abrasive: a brass nozzle works and lasts, and so does hardened steel. With hardened steel, print about 5 to 10°C hotter.

Based on Bambu Lab and Prusa guidance. More in our nozzle types guide.