Most filaments are judged by how they look at noon. ANTINSKY's newest release wants to be judged after the lights go out. The brand has just expanded its family with two glow-in-the-dark PLA filaments — PLA Silk Luminous Multicolor and PLA Luminous Multicolored — that charge under ordinary daylight or a desk lamp and release a soft, steady glow for hours in darkness.
What Makes a Luminous Filament Glow?
Both new materials are loaded with phosphorescent pigment. When photons hit the spool, electrons in the pigment jump to a higher energy state; as they relax back down, the stored energy is re-emitted as visible light over time. The result is a classic daylight-charge / dark-time-glow cycle that is completely passive — no electricity, no wiring, nothing to break.
Charging Best Practices
- Bright, diffuse light charges fastest — a north-facing window or an LED panel beats a lamp shade.
- Longer charge = longer glow; 5 minutes gives a short afterglow, 30 minutes gives hours.
- Avoid film coating — a matte surface scatters light back, while a gloss varnish dims the emission.
Two Ways to Glow
| Filament | Look (Daytime) | Glow Color | Best For |
|---|---|---|---|
| PLA Silk Luminous Multicolor | Silky, iridescent multi-tone | Evening glow across hues | Jewelry, figurines, collectibles |
| PLA Luminous Multicolored | Vivid saturated colors | Bright afterglow | Keychains, night signs, toys |
Project Ideas That Come Alive After Dark
Night-Light Toys
A glow-in-the-dark rocket or dinosaur needs no batteries. Print walls two to three perimeters thick and let the pigment do the rest.
Room Signage
Kids' name plates, emergency-light holders and router markers are the classic use — print the glyph on a light background so the glow colour pops.
Dark-Detailing
Add a single glowing accent layer inside a multi-piece prop and a switch that is invisible by day becomes a story by night.
Printing Settings That Keep the Pigment Happy
- Nozzle 190–210 °C — hotter than 220 °C can dull the phosphor.
- Bed 45–60 °C with a PEI or textured surface for solid first layers.
- Slow and steady — 40–60 mm/s gives even pigment distribution.
- Dry when parked; phosphorescent powders hydrate and dim if left in humid air.
Where to Find Them
Browse the growing glow family, plus the rest of the material line, on the PLA Silk Glow In Dark Filament page and the PLA Luminous Multicolored listing. Whether you are making a bedtime companion or a shop sign that never goes dark, now you can print light itself.