Luminous Rainbow? Like a radioactive Unicorn? Yup! Somebody thought it’s be a neat experiment to make a multicolor glow-in-the-dark filament, and here it is! When in doubt, use all the colors!

It shift color every 15~20M, from Magenta to Green to Blue. Best results come with UV irradiation, like from natural sunlight, or black-lightbulbs.

eSun is a top supplier of 3D printer filament, and we’re happy to be carrying their inventory. They are not some fly-by-night operation; eSun is an active part of the 3D printer community, and you’ll often see them represented at Maker Faires and 3D Printer Expos. We’ve even been to their labs at the Shenzhen University grounds where they develop and test their product. They take excellent care with their production methods, and each spool comes vacuum sealed in a pouch with moisture-absorbing desiccant. In short, eSun knows their stuff. We’re extremely happy with the quality and consistency of their material.

Features:

• Neutral White appearance in daylight; funky-rainbow glow-in-the dark performance!
• Based on PLA formulation, meaning the same excellent PLA printing performance.
• Elongation at break 11.8%. That means it was tested to stretch almost 12% before finally failing.
• Izod impact Strength (receiving a sharp blow):  5.4KJ/M²
  
• Melt Flow Index (grams/10minutes): 3.5 (190°C / 2.16kg)
• 1.2grams / cm³ density
• 72MPa (10.4kpsi) Tensile Strength
• Heat-distortion temperature of 53°C

Specifications:

• Base chemistry: polylactic acid thermoplastic
• 1.75mm nominal diameter (spec’d +/- 0.05, but is in practice closer to +/- 0.03)
• 1kg spools on LARGE diameter (easy unspooling) reels, vacuum sealed with desiccant
• Suggested build parameters:
  • Print temperature 210-230℃
  • Base temperature: 45-65 °C
  • Printing speed: 40-100mm/s