{"product_id":"16-x-1kg-glow-in-the-dark-pla-filament-1","title":"Glow in the Dark PLA+ Filament 16-Pack","description":"\u003ch2\u003e16kg at $22.49\/kg | 41% Off | UV-Reactive, Phosphorescent, Free USA Shipping\u003c\/h2\u003e\n\u003cp\u003eSixteen kilograms of Glow in the Dark PLA+. Vacuum-sealed per spool. Free shipping across the USA. At $22.49\/kg — 41% off individual pricing — this is the production-scale pack for cosplay vendors, novelty product sellers, event planners, and anyone printing glow items at volume.\u003c\/p\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eBefore you load this filament: you need a hardened steel nozzle.\u003c\/strong\u003e Glow in the dark filament contains strontium aluminate — a phosphorescent powder that creates the glow effect but acts like fine sandpaper inside a standard brass nozzle. A brass nozzle will wear rapidly with regular glow printing. If you're running this at production scale (16kg), a hardened steel nozzle is not optional — it's the first purchase to make before this pack arrives.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eHow Glow in the Dark Filament Actually Works\u003c\/h3\u003e\n\u003cp\u003eThink of a glow star sticker on a bedroom ceiling. You leave the light on, the sticker absorbs energy, you turn the light off — it glows. That's phosphorescence, and it's exactly what's happening inside this filament.\u003c\/p\u003e\n\u003cp\u003eThe active ingredient is \u003cstrong\u003estrontium aluminate\u003c\/strong\u003e — a hard, crystalline powder mixed into the PLA+ base. When light hits your finished print, those crystals absorb the photons (light particles) and store the energy. In the dark, they release it slowly as visible light — the glow you see. No batteries. No electronics. Just chemistry.\u003c\/p\u003e\n\u003cp\u003eKey facts about the glow effect:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUV light charges fastest and brightest\u003c\/strong\u003e — a UV flashlight or blacklight charges the print almost instantly. Direct sunlight (10–15 minutes) works excellently. Indoor LED or fluorescent light works, but takes longer and produces a less intense result.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlow is always brightest right after charging\u003c\/strong\u003e and fades gradually. That fade is the physics of phosphorescence — not a defect.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThicker prints glow longer\u003c\/strong\u003e — more phosphorescent material in the print = more stored energy = longer glow duration. Increase wall count and infill on pieces where maximum glow time matters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmooth surfaces glow more evenly\u003c\/strong\u003e — rough layer lines scatter the emitted light. Better surface finish = more uniform, cleaner-looking glow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGreen and blue variants glow most intensely\u003c\/strong\u003e — strontium aluminate's natural emission peaks in the green spectrum. Green and blue color variants consistently outperform red and violet for brightness and glow duration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e⚠️ Critical Hardware Requirements\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eRequirement\u003c\/th\u003e\n\u003cth\u003eWhy It Matters\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHardened steel nozzle — required for regular use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStrontium aluminate particles are extremely hard. They grind against the inside of a brass nozzle the same way sandpaper grinds wood. At 16kg of volume, a brass nozzle will fail. Hardened steel, ruby, or tungsten carbide nozzles handle abrasive filaments without degradation.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNozzle diameter: 0.4mm minimum, 0.5–0.6mm recommended\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWider nozzles reduce the abrasion rate and embed more phosphorescent particles per layer — which improves glow intensity. For production runs where print detail isn't the priority, 0.6mm is the sweet spot.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNo sharp bends in filament path\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThe strontium aluminate powder makes glow filament more brittle than standard PLA+. Bowden setups with tight curves can cause snapping mid-print. Keep the filament path as straight as possible.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAMS \/ multi-material systems: test first\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThe stiffness and abrasiveness of glow filament can cause feeding issues in systems with circuitous internal paths (e.g., Bambu AMS Lite). Run a single-spool test before committing to an automated multi-spool setup. An external spool holder with manual feed is the reliable fallback.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003ePack Contents \u0026amp; Value Breakdown\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePack size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16 × 1kg spools (16kg total \/ 35.2 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGlow in the Dark PLA+ (strontium aluminate phosphorescent pigment)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilament diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.75mm ±0.02mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePrice per kg\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e$22.49 (41% off individual spool pricing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackaging\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVacuum-sealed with desiccant — each spool individually sealed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShipping\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFree across the USA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003ePrint Settings for Glow in the Dark PLA+\u003c\/h3\u003e\n\u003cp\u003eGlow PLA+ prints like standard PLA+ in most ways — same base polymer, similar temperatures. The key differences are slightly slower speeds for better glow particle embedding, and the mandatory hardened nozzle.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSetting\u003c\/th\u003e\n\u003cth\u003eRecommended Range\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNozzle temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e210–230°C\u003c\/td\u003e\n\u003ctd\u003eStart at 215°C. Using a hardened steel nozzle? Raise 5°C — steel conducts heat less efficiently than brass, so the filament needs slightly more heat to flow cleanly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBed temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e55–70°C\u003c\/td\u003e\n\u003ctd\u003e60°C on PEI is the standard. Blue painter's tape on glass also works well for this material. Never exceed 70°C — high bed temps can degrade the phosphorescent pigment.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnclosure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNot required\u003c\/td\u003e\n\u003ctd\u003eOpen-frame printers work fine. PLA+ base means no warping issues.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart cooling fan\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFull (100%) after first 2 layers\u003c\/td\u003e\n\u003ctd\u003eStrong cooling reduces surface blobs and keeps layer lines sharp — which directly improves glow uniformity on the finished surface.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePrint speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40–60mm\/s\u003c\/td\u003e\n\u003ctd\u003eSlower than standard PLA+ — lower speed gives phosphorescent particles more time to settle evenly in each layer, producing a more uniform glow across the surface.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFirst layer speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15–25mm\/s\u003c\/td\u003e\n\u003ctd\u003eAlways slow the first layer for reliable bed adhesion.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNozzle diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.4mm (minimum) \/ 0.5–0.6mm (recommended)\u003c\/td\u003e\n\u003ctd\u003eWider nozzle = less abrasion per mm of filament + more glow particles per layer. 0.6mm is the production sweet spot.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLayer height\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2–0.3mm\u003c\/td\u003e\n\u003ctd\u003eThicker layers embed more phosphorescent material = brighter, longer glow. For display or decorative items, 0.3mm layers are optimal.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWall count (for glow intensity)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3–4 walls minimum\u003c\/td\u003e\n\u003ctd\u003eMore walls = more glowing material in the part = longer glow duration. For items where maximum glow time is the goal, go 4+ walls.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRetraction — Direct Drive\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.5–2mm at 40mm\/s\u003c\/td\u003e\n\u003ctd\u003eDon't over-retract — glow filament is more brittle than standard PLA+ and can snap at the extruder if retraction is too aggressive.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRetraction — Bowden\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4–5mm at 40mm\/s\u003c\/td\u003e\n\u003ctd\u003eKeep Bowden tube path as straight as possible to prevent snapping.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDrying (if needed)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50–55°C for 4–6 hours\u003c\/td\u003e\n\u003ctd\u003e⚠️ Phosphorescent pigments are moisture-sensitive. Wet glow filament loses glow intensity AND prints poorly. Keep sealed until use and store open spools with desiccant — especially in humid climates.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eGetting Maximum Glow From Your Prints — Design Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCharge under UV for fastest, brightest results\u003c\/strong\u003e — 10–15 minutes under a UV flashlight or blacklight produces a significantly more intense glow than indoor lighting. For display products and cosplay, a UV charging station pays for itself in customer reactions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotate while charging\u003c\/strong\u003e — ensure all faces get equal UV exposure. Uneven charging creates uneven glow spots on the final piece.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmooth top surfaces glow most evenly\u003c\/strong\u003e — enable ironing in your slicer for display pieces. Rough layer lines scatter the emitted light and produce a patchy, uneven glow effect.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvoid dark-colored environments for display\u003c\/strong\u003e — glow works best when the room goes fully dark. Even low ambient light reduces the perceived intensity of the effect.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl glow intensity through design\u003c\/strong\u003e — you can vary glow brightness across a single print by adjusting wall thickness in different zones. Thicker sections glow brighter and longer.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eBest Applications for This Pack\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003cth\u003eWhy Glow PLA+ Works\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCosplay props and armor\u003c\/td\u003e\n\u003ctd\u003eGlowing elements that activate under UV blacklights at conventions — no electronics, no batteries, no wiring.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNovelty and gift products\u003c\/td\u003e\n\u003ctd\u003eKeychains, figurines, desk ornaments, and display pieces with a tactile glow effect that photographs dramatically for product listings.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEvent and party props\u003c\/td\u003e\n\u003ctd\u003eGlow-activated table centerpieces, signage, and props for blacklight events, escape rooms, and themed environments.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKids' room decor\u003c\/td\u003e\n\u003ctd\u003eStars, moons, name signs, and nightlight frames that charge during the day and provide soft ambient glow at night.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety and wayfinding markers\u003c\/td\u003e\n\u003ctd\u003eEmergency exit markers, step edge indicators, and low-light signage that remain visible after power failure.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEducational models\u003c\/td\u003e\n\u003ctd\u003eAstronomy models, molecular structures, and science fair exhibits that demonstrate phosphorescence and light absorption concepts.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eStoring 16 Glow Spools\u003c\/h3\u003e\n\u003cp\u003eGlow filament has an extra storage consideration beyond standard PLA+: the phosphorescent pigment is moisture-sensitive. Wet pigment loses glow intensity before it even affects print quality — so you might not notice the problem until you see a finished print that barely glows.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeep sealed until the spool goes on the printer\u003c\/strong\u003e — each spool ships vacuum-sealed with desiccant. Don't open stock spools in advance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen spools go in airtight containers with fresh desiccant\u003c\/strong\u003e, ideally within 24–48 hours of opening if you're in a humid climate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStore in a cool, dark place\u003c\/strong\u003e — prolonged light exposure before printing doesn't \"pre-charge\" the filament helpfully; it can gradually degrade the pigment over time. Keep stock spools away from direct sunlight or strong UV sources.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSame-batch consistency:\u003c\/strong\u003e all 16 spools ship from the same manufacturing batch — matched glow intensity and color across your entire production run.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eWho Is This 16-Pack For?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCosplay vendors and prop makers\u003c\/strong\u003e producing glow elements at event scale — convention season runs fast, and 16kg ensures you don't run out of your most dramatic material mid-production.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNovelty and gift product sellers on Etsy and Amazon\u003c\/strong\u003e who have validated the market for glow items and are ready to move from per-spool ordering to production pricing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEvent production companies\u003c\/strong\u003e building props, signage, and environmental elements for blacklight events, escape rooms, and themed installations where glow is a core design requirement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrint farms adding a specialty SKU\u003c\/strong\u003e — glow products command a significant price premium over standard PLA items. At 41% off, the margin math on glow items at production scale is compelling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEducational institutions\u003c\/strong\u003e running STEM programs where glow filament is used to demonstrate photophysics, light-matter interaction, and material science in a way that holds student attention.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBrowse individual spools in our \u003ca href=\"\/collections\/glow-in-dark-filament\"\u003eGlow in the Dark Filament collection\u003c\/a\u003e. Explore everything in our \u003ca href=\"\/pages\/3d-printing-filaments\"\u003e3D Printing Filaments guide\u003c\/a\u003e.\u003c\/p\u003e","brand":"IIID MAX","offers":[{"title":"Default Title","offer_id":52846301577510,"sku":"GLOW-X16","price":359.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1004\/1986\/2822\/files\/GLOW_IN_THE_DARK_PLA_PACK_16.webp?v=1772754975","url":"https:\/\/supplies3d.shop\/products\/16-x-1kg-glow-in-the-dark-pla-filament-1","provider":"U.S. Printer Supplies","version":"1.0","type":"link"}