3D printing PET-G glow-in-the-dark filament 1.75 mm 0.5 kg, green

Glow-in-the-dark PET-G filament, 1.75 mm diameter on a 0.5 kg spool, formulated for fused filament fabrication (FFF/FDM) 3D printers. This PET-G variant combines the mechanical and processing properties of standard PET-G—good layer adhesion, dimensional stability and moderate flexibility—with a phosphorescent additive that accumulates light and emits a green glow in low-light conditions. The filament is intended for printing decorative elements, signage, cosplay accessories and functional parts that benefit from visibility in the dark.

Advantages

The PET-G glow filament maintains the typical strengths of PET-G: reliable extrusion, reduced warping compared with some rigid materials, and strong interlayer bonding for durable prints. The integrated phosphorescent pigment provides green afterglow without requiring post-processing or painting. The 1.75 mm diameter and 0.5 kg spool size suit most desktop FFF/FDM printers and hobby workflows, offering a balance between material volume and handling convenience.

Suitable for

• Decorative models and display pieces that require night-time visibility
• Signs, markers and safety indicators for low-light environments
• Cosplay props, costume parts and miniature accessories
• Functional parts that need moderate flexibility and visibility in the dark
• Prototyping and hobby printing with standard 1.75 mm extruders

Key specifications

• Material: PET-G with phosphorescent additive
• Nominal diameter: 1.75 mm
• Spool weight: 0.5 kg of filament
• Emission color: green phosphorescent glow after light exposure
• Recommended printer type: FFF/FDM desktop 3D printers
• Mechanical properties: moderate flexibility, good layer adhesion

How to use

Load the 1.75 mm PET-G glow filament into a compatible FFF/FDM printer following the printer manufacturer's filament loading procedure. Typical printing temperatures for PET-G are a good starting point; adjust nozzle and bed temperatures, print speed and cooling based on your printer and geometry to optimize surface finish and interlayer bonding. Allow the printed part to receive sufficient ambient or direct light exposure to charge the phosphorescent pigment before observing glow performance in the dark. Store the spool in a dry, cool place when not in use to preserve material quality.

Usage recommendations

Use a hardened or wear-resistant nozzle if printing many abrasive or pigment-loaded filaments in the long term. For best glow, expose printed parts to bright light for several minutes; thicker sections and matte finishes typically retain and emit light more visibly than very thin or highly glossy features.