Yiqiu3D UV Color-Changing PLA Filament 1.75 mm 1 kg Sunlight-Reactive

Brand: Yiqiu3D · Model: PLAgb0001 · Static colors get ignored — this UV-reactive PLA shifts hue when sunlight hits it, so prints change from one tone to another before your eyes, giving products a living color story no pigment alone can match.

  • Two optical gradient tones
  • Laser-measured 1.75 mm diameter with consistent winding and vacuum-sealed packaging keeps the special additive evenly dispersed
  • Prints with standard PLA ease
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Diameter 1.75mm
Material PLA
Quick Answer

How does UV-reactive PLA change color?

Light-sensitive additives in the polymer react to UV exposure by absorbing different wavelengths, so the surface tone shifts when sunlight or UV light hits it; the change reverses when the light source is removed.

Full answers below

Is it right for my project?

Best for: For architectural and scale models where dimensional consistency across a set matters - available in 3 colours; 1kg spools; lead colour PLA Photochromic Red. Not ideal for: Avoid where the part must flex or absorb impact - TPU is the better material there - 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 tones

Blue and Purple Red — offer distinct daylight looks, and the color change is reversible, so parts cycle between shades all day long.

Laser-measured 1.75 mm diameter with consistent winding and vacuum-sealed packaging keeps the special additive evenly dispersed, so the color shift is smooth across the whole part.

Prints with standard PLA ease

the 220 °C profile on Bambu Lab and Creality printers delivers clean detail, so the magic color shift never costs you print quality.

Available Colors

Technical Data

Specifications

Diameter 1.75mm
Material PLA

Print Profile

Yiqiu3D UV Color-Changing PLA Filament 1.75 mm 1 kg Sunlight-Reactive 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

Laser-measured 1.75 mm diameter with consistent winding and vacuum-sealed packaging keeps the special additive evenly dispersed, so the color shift is smooth across the whole part.

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

Attributes

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

Frequently Asked Questions

How does UV-reactive PLA change color?
Light-sensitive additives in the polymer react to UV exposure by absorbing different wavelengths, so the surface tone shifts when sunlight or UV light hits it; the change reverses when the light source is removed.
Will it work on my printer?
Yes — 1.75 mm PLA uses standard PLA presets on Bambu Lab X1/P1/A1 and Creality machines; no special hardware is needed for the color change.
What settings should I use?
Use a 220 °C nozzle and 50-60 °C bed with normal PLA speeds; keep the spool in low light during storage so the pigment stays fresh and responsive.
How much can I print from a 1 kg roll?
A 1 kg roll of 1.75 mm filament delivers roughly 300-340 meters — enough for a series of novelty keychains, phone cases or a batch of UV-reveal art tiles.
Do the two colors look different in normal light?
Yes — Optical Gradient Blue keeps a blue base tone and Purple Red a purple-red base in normal light; both deepen or shift once exposed to direct UV or sunlight.
What speed is recommended?
Standard PLA speeds of 60-120 mm/s work fine; slower walls improve the smoothness of the gradient zones on curved surfaces.
What products suit color-shifting filament?
Novelty and functional-lighting items: UV-reveal signage, color-shift phone cases, keychains, jewelry, outdoor markers and toys that delight in sunlight.
How should it be stored?
Keep the spool in its vacuum-sealed bag with desiccant, away from direct sunlight and below 20% humidity, so the UV-reactive pigments do not degrade before printing.

Documentation & Downloads

Everything we publish for this material, in one place.

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