Yiqiu3D UV Reactive Photochromic PLA Filament 1.75mm 1kg

Brand: Yiqiu3D · Model: PLAgb0001 · Prints that sit there looking static are easy to ignore? UV-reactive photochromic PLA shifts color when sunlight or UV light hits it, turning an everyday model into a live color-changing experience that wows every viewer.

  • Two optical gradient options
  • Color-change filaments that fade or print patchy? Our laser-measured 1.75 mm diameter and evenly dispersed photo-pigments give uniform
  • Fun effects shouldn't come with finicky printing? Rated 220 °C and tuned for FDM and FDM machines
Compare filaments
Diameter 1.75mm
Material PLA
Quick Answer

How does UV reactive photochromic PLA change color?

Photo-reactive pigments embedded in the PLA absorb UV light and temporarily change molecular structure, darkening or shifting the color; when the UV source is removed, the print slowly returns to its original tone.

Full answers below

Is it right for my project?

Best for: A dependable choice for beginners and everyday print jobs on any FDM printer, with no heated chamber needed - available in 3 colours; 1kg spools; lead colour PLA Photochromic Red. Not ideal for: Avoid outdoor use and continuous stress - switch to ASA for UV and weather exposure - available in 3 colours; 1kg spools; lead colour PLA Photochromic Red.

Print settings

Nozzle 190-220°C

01 · Why this one

Product highlights

3 reasons

Two optical gradient options

PLA Optical Gradient Blue and PLA Optical Gradient Purple Red — let you pick the mood: ocean-deep blue or sunset violet, both emerging from a light base tone outdoors.

Color-change filaments that fade or print patchy? Our laser-measured 1.75 mm diameter and evenly dispersed photo-pigments give uniform, repeatable color reactions spool after spool, vacuum-sealed for freshness.

Fun effects shouldn't come with finicky printing? Rated 220 °C and tuned for FDM and FDM machines, this filament prints with standard PLA ease and predictable results.

Available Colors

Technical Data

Specifications

Diameter 1.75mm
Material PLA

Print Profile

Yiqiu3D UV Reactive Photochromic PLA Filament 1.75mm 1kg prints best at 190-220°C nozzle.

Nozzle Temp190-220°C

Spool Specification

Spool details for your feeding and handling setup.

Gross Weight1.35 kg
Lengthapprox. 335m
Spool Size (L×W×H)21 × 21 × 7 cm
Pack FormatPiece
Spool TypeRound Spool

What You Receive

Color-change filaments that fade or print patchy? Our laser-measured 1.75 mm diameter and evenly dispersed photo-pigments give uniform, repeatable color reactions spool after spool, vacuum-sealed for freshness.

  • Vacuum-sealed bag
  • Desiccant pack
  • Arrives dry and ready to print

Attributes

Country / Regionchina
HS Code39169050
Item No.uv-reactive-photochromic-pla-filament-3d-printer-filament
Diameter 1.75mm
Length approx. 335m
Appearance Round Spool
Before You Ask

Frequently Asked Questions

How does UV reactive photochromic PLA change color?
Photo-reactive pigments embedded in the PLA absorb UV light and temporarily change molecular structure, darkening or shifting the color; when the UV source is removed, the print slowly returns to its original tone.
Which printers can use this filament?
Any standard 1.75 mm FDM printer — most standard FDM and FDM — works with regular PLA profiles, so no special hardware is required for the color-change effect.
What print settings should I use?
Print at a 220 °C nozzle with a 50–60 °C bed and 40–60 mm/s; standard PLA cooling and retraction settings apply, making it an easy drop-in material.
How long does a 1 kg spool last?
A 1 kg spool holds roughly 300+ meters; a small kinetic toy or keychain uses 10–30 g, so you can expect 30–60 small items per spool depending on size.
What colors are available and how strong is the shift?
The two optical gradients are PLA Optical Gradient Blue and PLA Optical Gradient Purple Red; in direct sunlight both deepen noticeably within seconds and fade back indoors, with the exact depth depending on UV intensity.
What speeds can I print at?
30–100 mm/s is supported; 40–60 mm/s gives clean surfaces, and since the effect works on the printed surface, outer-wall quality matters more than speed.
What are the best applications for UV-reactive filament?
Novelty and engagement products — toys, keychains, phone stands, lampshade accents, signage and art that surprise users when taken outside; great for brand giveaways and gift items.
How is it packaged and stored?
It ships vacuum-sealed with desiccant; because UV triggers the effect, store opened spools in the resealable bag or a dark box, away from direct sunlight, to preserve response sharpness.

Documentation & Downloads

Everything we publish for this material, in one place.

Ready to Order

Get factory-direct pricing on Yiqiu3D UV Reactive Photochromic PLA Filament 1.75mm 1kg

Not sure this is the right material? → Compare filaments