Colourbing Glow-in-the-Dark PLA+ 3D Printer Filament, 1.75mm, 4 Colors
Product description
Phosphorescent pigment gives these PLA+ prints a visible glow after exposure to sunlight or UV light. The set includes four 250g spools in distinct colors, so you can explore different luminous looks without committing to full-size rolls. Its 1.75mm diameter is suited to most 1.75mm FDM 3D printers. Use it for decorations, toys, miniatures, signs, and other projects where a glow effect adds visual interest.
Practical tips

Expose a finished print to sunlight or UV light to charge its glow, then display it in a darker setting to see the luminous effect. The brightness and duration depend on the light source and exposure time, and the glow naturally fades as the stored light energy is released. Bright sunlight or strong UV light can produce a stronger, longer-lasting effect.
The four colors—Firefly Blue, Sky Blue, Rainbow5, and Rainbow6—make it easy to try different appearances across a project or create contrasting details. Each spool holds 250g, giving you smaller amounts of multiple colors rather than one full-size roll in a single shade. That format is useful for accent pieces, small models, personalized gifts, and test prints where color variety matters.



For printing, match the 1.75mm filament to a compatible 1.75mm FDM printer. The product description gives a diameter tolerance of ±0.03mm and describes a machine-wound spool intended to feed smoothly. Each spool is vacuum sealed with a desiccant bag, store filament in a dry place and keep it away from dust to help preserve its condition between projects.
Tech specs

- Type: Glow-in-the-dark PLA+ 3D printer filament
- Material: Polylactic acid and phosphorescent pigment
- Diameter: 1.75mm
- Diameter tolerance: ±0.03mm
- Colors: Firefly Blue, Sky Blue, Rainbow5, and Rainbow6
- Spool size: 250g each
- Quantity: 4 spools
- Compatibility: Most 1.75mm FDM 3D printers
- Storage packaging: Vacuum sealed with a desiccant bag
Why it’s worth it



A single-color spool suits projects that use one shade throughout. This bundle takes a more flexible approach: four distinct glow colors in smaller spools let you choose a look for each print without stocking several full-size rolls. That variety can help when making a set of miniatures, adding luminous accents to a sign, or producing different decorative pieces from the same material type.
The glow effect gives printed objects a second visual quality beyond their appearance in normal light. Combined with the choice of blue and rainbow colors, it offers makers, hobbyists, and students a practical way to experiment with luminous designs. The 1.75mm format also makes the set suitable for a broad range of FDM printers that use that filament diameter.

Questions before you buy
How do you make the prints glow? Expose them to sunlight or UV light, then view them in a dark environment. The light source and exposure time affect the glow, which fades naturally over time.



Which colors are included? The bundle contains Firefly Blue, Sky Blue, Rainbow5, and Rainbow6, with 250g on each spool.
What printer type is this filament for? It is 1.75mm PLA+ filament intended for use with most 1.75mm FDM 3D printers.
Final verdict
This four-spool set suits makers who want to add luminous color to small prints, creative decorations, toys, miniatures, or signs. Its mix of four named colors, 250g portions, and a common 1.75mm FDM format makes it a useful choice for projects that benefit from variety and a glow-in-the-dark finish.
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