Spectrum Filament PLA SILK Rainbow FUSION 1.75mm 1kg (81016)

For makers who want their prints to stand out with a silky, colour-shifting finish, the Spectrum PLA SILK Rainbow FUSION filament delivers a stunning gradient effect that transitions smoothly between hues along the spool. Unlike standard PLA, this silk variant offers a glossy, almost pearlescent surface that hides layer lines and elevates decorative pieces, artistic models, and display prototypes. The FUSION series is engineered for reliable printing with low warping and easy bed adhesion, making it accessible even for those new to silk filaments. Each 1 kg spool is vacuum-sealed with desiccant to maintain optimal moisture levels, ensuring consistent extrusion and vibrant colour transitions from the first metre to the last.

Highlights

• Silk rainbow gradient: a single spool produces a dynamic multicolour effect that shifts as you print, ideal for eye-catching vases, sculptures, and cosplay props.
• Precision diameter: 1.75 mm filament with a tight tolerance of ±0.03 mm ensures smooth feeding and reduces the risk of clogs or under-extrusion.
• Easy to print: low warping and minimal shrinkage make it forgiving on open-frame printers, while the recommended bed temperature of 0–60 °C works with or without a heated bed.
• Biodegradable base: made from PLA, a plant-derived polymer that is compostable under industrial conditions, aligning with eco-conscious workflows.
• Versatile speed range: prints reliably at 40–100 mm/s, giving you flexibility between detailed slow prints and faster draft iterations.

In daily use

Load the spool into any FDM printer with a standard 1.75 mm hotend and set your nozzle between 190 °C and 220 °C. The silk formulation flows smoothly and produces a glossy surface that feels premium to the touch. Because the colour transition is built into the filament, you do not need multi-material hardware to achieve a rainbow effect—simply print larger models or multiple parts to see the gradient progress. Keep the filament dry when not in use; the included vacuum packaging and desiccant help, but a sealed container is recommended for long-term storage. For best results, print a temperature tower to fine-tune gloss and layer adhesion, as silk PLA can be slightly more sensitive to temperature than matte PLA.

Full specifications

• Material: PLA (Polylactic Acid) with silk finish
• Filament diameter: 1.75 mm (±0.03 mm)
• Net weight: 1 kg
• Colour: Rainbow (multicolour gradient)
• Series: FUSION
• Printing temperature: 190–220 °C
• Heated bed temperature: 0–60 °C
• Density: 1.24 g/cm³
• Recommended print speed: 40–100 mm/s
• Spool material: Plastic
• Packaging: Vacuum sealed with desiccant
• Odour: Low
• Shrinkage: Very low
• Applications: Decorative prints, artistic models, prototypes

Final note

Spectrum's FUSION silk rainbow PLA is a reliable choice for anyone wanting to add a premium, colour-shifting finish to their prints without the complexity of multi-colour systems. Its consistent diameter and easy printing characteristics make it a practical addition to any maker's filament collection.