Is SUNLU Glow in the Dark PLA worth it?
A top pick in Additive Manufacturing Products on Amazon (#6 when we checked, Oct 27, 2026)
Worth it if Choose SUNLU Glow in the Dark PLA if you want green 1.75mm PLA for FDM projects that glow after absorbing light, especially UV light. It is worth considering if the visual effect matters more than having the most predictable feeding and adhesion experience.
Good to know: If you need especially consistent feeding, adhesion, or flexibility, look for a filament with print behavior that better matches your setup.
Glow-in-the-dark PLA for decorative FDM prints
Your print can look ordinary under room light, then show a second finish after the lights go down. SUNLU Glow in the Dark PLA contains phosphorescent materials that absorb light energy and glow afterward. The listing says UV light strengthens the effect, so the finished piece needs light exposure before the glow appears.
The format gives you a clear first check. This is 1.75mm PLA with stated dimensional accuracy of plus or minus 0.02mm, and SUNLU lists it as suitable for almost all 1.75mm FDM 3D printers. Start with the maker's suggested 200 to 210°C nozzle temperature, 50 to 65°C bed temperature, and 50 to 100mm/s print speed, then adjust for your printer if needed.
The spool is listed as neatly wound, with an 8-inch diameter, 2.5-inch width, and 2.2-inch hub hole. That design is intended to help the filament feed neatly, but the buyer overview reports mixed feeding results, including clogging, brittleness, and stringiness. Adhesion and print quality also receive mixed feedback. The maker advises avoiding long direct sunlight exposure because the color can fade faster. This is a glow-focused PLA option with useful setup guidance, but your printer's feeding and adhesion results deserve a small test print first.
You get one 1 kg spool of 1.75mm PLA for multiple projects, plus the glow effect and maker-recommended settings. The value is strongest when decorative after-dark results matter and you can allow for setup tuning.
Great for
- Makers creating green decorative prints with an after-dark glow
- Owners of 1.75mm FDM printers
- Users wanting a 1 kg spool for several projects
- Printers able to start within the listed temperature and speed ranges
Maybe not for you if
- You need a filament format other than 1.75mm
- You want especially predictable feeding, adhesion, or flexibility
- Your prints will spend long periods in direct sunlight
SUNLU Glow in the Dark PLA suits makers who want green decorative prints with a clear after-dark effect and use 1.75mm FDM printers. The phosphorescent material provides the visual change, while the 1 kg spool gives you material for more than one project. Its neat winding and listed settings provide a sensible starting point, though customer feedback is mixed on feeding, adhesion, brittleness, stringiness, and print quality. Treat it as a glow-first filament and test your setup before committing to a large print.
Amazon shoppers rate it 4.2 out of 5 across 248 ratings. That is their number, not ours.
Quick answers before you buy
What printers is this filament compatible with?
It is designed for 1.75mm FDM 3D printers. Confirm your printer uses that filament diameter before ordering.
What settings does SUNLU recommend?
SUNLU recommends a 200 to 210°C nozzle, 50 to 65°C bed, and 50 to 100mm/s print speed.
How does the glow effect work?
The phosphorescent PLA absorbs light energy and glows afterward. UV light can produce a stronger glow, according to the listing.
What size is the spool?
The spool measures 8 inches in diameter and 2.5 inches wide, with a 2.2-inch hub hole.
Should it stay in direct sunlight?
Avoid long exposure to direct sunlight. The listing says longer exposure can make the color fade faster.
The spec sheet, for those who want it
| Brand Name | SUNLU |
|---|---|
| Manufacturer Part Number | SLDE-PLANOC-NTGN-1KG-GMSLUS |
| Unit Count | 1082.68 Feet |
| Item Highlight | Neatly Wound Luminous PLA 3D Printer Filament 1.75mm Dimensional Accuracy +/- 0.02mm, Fit Most FDM 3D Printers |
| Number of Items | 1 |
| Number of Packs | 1 |
| Model Number | Glow in the Dark PLA Filament 1.75mm |
| Item Weight | 1 kg |
| Item Diameter | 1.75 millimeters |
| Material Type | Polylactic Acid |
| Color | Glow in the Dark - Green to Glow Green |
| Brand | SUNLU |
| Material | Polylactic Acid |
| Color | Glow in the Dark - Green to Glow Green |
| Item Weight | 1 kg |
| Item Diameter | 1.75 millimeters |
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