Colourbing Glow-in-the-Dark PLA+ Filament, 1.75 mm, 4 × 250 g

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Product guide

Colourbing Glow-in-the-Dark PLA+ Filament, 1.75 mm, 4 × 250 g

Colourbing glow-in-the-dark PLA+ filament is a four-spool assortment in Firefly Blue, Sky Blue, Rainbow5, and Rainbow6. The listing claims UV- or sunlight-charged luminous prints and broad compatibility with 1.75 mm FDM printers, while customer feedback reports decent printability alongside concerns about brittleness.

At a glance

The bundle is described as four 250 g spools, with two named blue options and two rainbow variants.
The listing says the filament glows after absorbing sunlight or UV light, and that glow strength and duration depend on the charging source and exposure.
The listing claims ±0.03 mm diameter accuracy and compatibility with most 1.75 mm FDM printers.

Price

$21.99Save 31%

Reference price: ~~$31.99~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

Four small spools let makers try several glow colors without buying full-size rolls.
The glow effect offers a distinct look for decorations, toys, miniatures, signs, and other display prints.
The listing says each spool is vacuum sealed with a desiccant bag for storage protection.

Cons

Customer feedback mentions brittleness and says the filament breaks more easily, a practical concern when handling or feeding it.

Technical specifications

6 specifications

Identity
Brand	Colourbing
Colors	Firefly Blue/Sky Blue/Rainbow5/Rainbow6
Additional features	Glow In The Dark, Rainbow Color, Multi-color

Dimensions and installation
Filament diameter	1.75 millimeters
Weight listed	2.2 pounds

Materials and protection
Material listed	Phosphorescent Pigment, Polylactic Acid

What to know before buying

Listing details to confirm

Glow intensity depends on the light source and exposure time, then fades as stored light energy is released. The listing describes four 250 g spools, while the listed total item weight is 2.2 pounds, so the bundle's stated weights are inconsistent. The 2.2-pound figure is a listing detail, not a confirmed spool-net-weight total.

Who is it for?

A good fit for

Makers who want small amounts of multiple glow-in-the-dark colors for decorative or novelty prints.
Users with a 1.75 mm FDM printer looking to try luminous PLA+ before committing to larger rolls.

Less suited to

Buyers who need a clearly established brittle-resistant filament or dependable continuous feeding without handling concerns.
Projects requiring a specified glow duration or consistent brightness, since the listing provides no fixed performance figure.

Colourbing Glow-in-the-Dark PLA+ Filament, 1.75 mm, 4 × 250 g · photo 2 — Additional product photo 2

Customer reviews on Amazon

4 / 5 · 63 ratings

5 stars58%58%
4 stars16%16%
3 stars5%5%
2 stars8%8%
1 star13%13%

Customer feedback highlights decent printability but also reports brittleness and easier breakage. For buyers using the listing's claimed 1.75 mm FDM compatibility, the printability comments are relevant, while the breakage concerns matter during handling and feeding. Ratings lean positive overall but include a notable low-star share, so the aggregate does not establish a consistent experience.

Positive themes

Customers describe the filament as printing decently.

Negative themes

Customers report brittleness and easier breakage.

Frequently asked questions

What colors are listed in this bundle?

The title names Firefly Blue, Sky Blue, Rainbow5, and Rainbow6, with four 250 g spools described in the feature text.

Does the filament glow continuously in the dark?

No fixed duration is stated. The listing says sunlight or UV exposure charges the filament and that the glow naturally fades as stored light energy is released.

What printer compatibility does the listing claim?

It claims compatibility with most 1.75 mm FDM 3D printers. Check that your printer uses 1.75 mm filament.

What do customers report about printing and handling?

Customer feedback describes printability as decent but also reports brittleness and easier breakage. Consider that trade-off when handling and feeding the filament.