{"product_id":"linterna-uv-395nm-resina-3d","title":"UV Flashlight 395nm Battery Powered | Resin 3D Curing \u0026 Verification","description":"\u003cp\u003e395nm ultraviolet flashlight with a high-intensity 3W LED, focusable zoom, CNC-machined hard-anodized aluminum alloy body. Designed primarily for UV resin 3D printing workshops (SLA, MSLA, DLP): lets you \u003cstrong\u003efinish curing\u003c\/strong\u003e parts that came out under-polymerized, \u003cstrong\u003evisually inspect\u003c\/strong\u003e the cure state of any printed part, and \u003cstrong\u003edetect invisible splashes\u003c\/strong\u003e of uncured resin on your workbench, floor, tools, or clothing. Also useful for secondary applications such as fluorescence detection, banknote authentication, invisible markers, and organic stain detection (pet urine, biological fluids on countertops). \u003cstrong\u003eImportant: battery not included\u003c\/strong\u003e — takes 1 standard AA battery or 1 rechargeable 14500 cell (neither included).\u003c\/p\u003e\n\n\u003ch2\u003eWhy you need it for UV resin printing\u003c\/h2\u003e\n\u003cp\u003eAny maker printing with an SLA printer (Anycubic Photon Mono, Elegoo Saturn, Phrozen, Creality, and similar) works with photopolymer resins that require UV curing — both during printing and post-processing. Having a standalone, high-power UV flashlight in your workshop solves four real day-to-day problems:\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFinishing the cure on sticky parts.\u003c\/strong\u003e When a part comes out of the wash \u0026amp; cure station but still has soft spots (because the UV light didn't fully reach certain areas due to complex geometry, support shadows, or insufficient washing), spot-lighting those areas with the flashlight for a few minutes completes polymerization in that specific zone — no need to run the whole part through the cure chamber again.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eChecking the cure state of a finished part.\u003c\/strong\u003e Under 395nm UV light, uncured resin fluoresces visibly and stands out clearly from properly polymerized areas. It's the fastest way to verify whether your cure times are dialed in — especially useful when breaking in a new resin or switching machines.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFinding invisible resin splashes in your workshop.\u003c\/strong\u003e Uncured UV resin is one of the messiest hazards in an SLA setup — it splashes when rinsing parts, when peeling prints off the build plate, and during general handling. Most of these splashes are nearly invisible under normal light but glow brightly under 395nm UV. Running the flashlight over your workbench, floor, walls, and work clothes lets you locate and clean up uncured resin before it contacts skin (it's a known allergen\/sensitizer) or permanently cures onto surfaces you don't want damaged.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSupplementing the cure for Gomagom 87.\u003c\/strong\u003e The \u003ca href=\"\/en\/products\/gomagom-87-adhesivo-uv-hi-tech-4g\"\u003eGomagom 87 UV Adhesive\u003c\/a\u003e in our catalog includes a small curing light built into the cap, which is sufficient for small adhesive volumes. For larger repairs requiring thicker layers or full curing across wide areas, a higher-power external UV flashlight speeds up the process significantly. The 395nm flashlight we offer here is compatible with Gomagom 87's chemistry (photoinitiators active at 365–405nm).\u003c\/p\u003e\n\n\u003ch2\u003eSecondary use cases\u003c\/h2\u003e\n\u003cp\u003eWhile we designed this for 3D printing workshops, a high-power UV flashlight covers a range of scenarios that can be handy beyond the hobby:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrganic stain detection.\u003c\/strong\u003e Pet urine (dogs, cats) on carpets, sofas, and floors. Other biological fluids. Proteins fluoresce under 395nm UV.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBanknote and document authentication.\u003c\/strong\u003e UV security marks on euro, dollar, and pound banknotes; official stamps in passports; security inks on ID cards.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUV invisible markers.\u003c\/strong\u003e Invisible ink only revealed under black light — used in security, labeling, crafts, and escape rooms.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFluorescent mineral detection.\u003c\/strong\u003e Mineral collecting, amateur mineralogy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eScorpion hunting.\u003c\/strong\u003e In areas where scorpions are found, they fluoresce brightly under UV light — useful for nighttime outdoor use.\u003c\/p\u003e\n\u003cp\u003eThese are secondary uses — the primary focus of this product in our catalog is resin 3D printing workshops.\u003c\/p\u003e\n\n\u003ch2\u003eHow to use it with UV resin prints\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e1. Insert an AA or 14500 battery.\u003c\/strong\u003e The flashlight does not include a battery. It accepts both a standard AA alkaline battery (cheaper, shorter runtime) and a rechargeable 14500 lithium battery (higher upfront cost, much longer runtime per charge).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2. Turn it on and adjust the zoom.\u003c\/strong\u003e Rotating the flashlight head controls the beam area — narrow focus for curing small areas at maximum intensity, wide beam for inspecting larger surfaces.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e3. To finish curing: hold the light over the tacky area for several minutes.\u003c\/strong\u003e There is no exact time — it depends on the thickness of the uncured layer, the resin formulation, and the distance between the flashlight and the part. As a general guideline, 3–5 minutes at a distance of 5–10 cm is usually enough for small areas. For larger parts or thicker layers, do multiple passes rotating the piece so the light reaches all sides.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e4. To verify curing: dim the room and inspect the part under UV.\u003c\/strong\u003e In low light, properly cured areas appear uniform; areas with uncured resin fluoresce differently (typically brighter or with a slightly different hue).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e5. To detect resin splatter: dim the room and sweep surfaces with the light.\u003c\/strong\u003e Uncured resin drips and stains show up clearly against dark backgrounds.\u003c\/p\u003e\n\n\u003ch2\u003eImportant notice: battery NOT included\u003c\/h2\u003e\n\u003cp\u003eSo you are not caught off guard when you open the package: \u003cstrong\u003ethis flashlight does not include a battery\u003c\/strong\u003e. This is a manufacturer decision to reduce international shipping costs (batteries have logistics restrictions). You will need to purchase one of the following separately:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAA alkaline battery:\u003c\/strong\u003e the budget option. Available at any supermarket or hardware store. Average runtime: 1–2 hours of continuous use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRechargeable 14500 lithium battery:\u003c\/strong\u003e the more professional option. Higher initial investment but rechargeable hundreds of times, with greater output intensity and much longer runtime per charge.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you already have AA batteries at home for a remote control or clock, the flashlight will work with them right away.\u003c\/p\u003e\n\n\u003ch2\u003eUV light safety\u003c\/h2\u003e\n\u003cp\u003e395nm UV light is low-intensity UV-A — the same part of the spectrum as the UV in sunlight that is filtered by the atmosphere before it reaches us. It is not comparable to a germicidal UV-C lamp (which is genuinely hazardous to eyes and skin). That said, basic precautions are still recommended:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDo not stare directly at the LED while it is on for extended periods\u003c\/li\u003e\n  \u003cli\u003eDo not deliberately shine it into the eyes of pets or children\u003c\/li\u003e\n  \u003cli\u003eFor long sessions (more than 30 minutes of continuous use), consider wearing UV-protective eyewear\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor typical workshop use (spot-curing for a few minutes at a time, checking for resin splatter during cleanup), no special protective equipment is required.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Zoomable UV LED flashlight\/torch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWavelength:\u003c\/strong\u003e 395 nm (UV-A)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED Power:\u003c\/strong\u003e 3 W\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Material:\u003c\/strong\u003e CNC-machined aluminum alloy with hard anodized finish\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Color:\u003c\/strong\u003e Black\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 92 mm length × 26 mm head × 22 mm tail\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 58 g (without battery)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e 1× AA alkaline battery or 1× 14500 rechargeable lithium battery (NOT included)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLight Modes:\u003c\/strong\u003e 1 mode (on\/off)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eZoom:\u003c\/strong\u003e Focusable by rotating the head\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Applications:\u003c\/strong\u003e Curing and inspection of UV resin 3D printed parts (SLA, MSLA, DLP), detecting uncured resin spills in the workshop, supplemental curing of Gomagom 87 UV adhesive\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecondary Applications:\u003c\/strong\u003e Banknote authentication, organic stain detection, fluorescent minerals, invisible ink markers, scorpion detection\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Alonefire (model SK68UV)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Buy It from Mr Resin\u003c\/h2\u003e\n\u003cp\u003eIf you work with UV resin 3D printing (Anycubic, Elegoo, and other brands), a powerful UV flashlight is one of those workshop tools that once you have it, you use it all the time — from the moment you pull a part out of your wash \u0026amp; cure station and want to check it's fully cured, to the final cleanup of your work surface. As a store specializing in 3D printing, we carry it specifically because we know how useful it is for our customers.\u003c\/p\u003e\n\u003cp\u003eShips from our warehouse in Spain: delivered in 24–48h (no waiting 2–4 weeks like with direct purchases from Asian suppliers). If you're already placing an order for resin, filament, or accessories, adding the UV flashlight ships in the same package at no extra cost. Free shipping on orders over €79 to mainland Spain.\u003c\/p\u003e\n\u003cp\u003eMr Resin has been serving over 5,000 makers across Spain, Portugal, and France for years. Our catalog is built around what the community actually asks for: printers and materials as the backbone, and the workshop tools that become part of everyday use.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan it fully cure UV resin 3D printed parts?\u003c\/strong\u003e\u003cbr\u003e\nFor small parts or spot-curing tacky areas, absolutely — it works great. For curing large parts in full or very thick layers of resin, a dedicated wash \u0026amp; cure station with an enclosed curing chamber is the more efficient solution (Anycubic Wash \u0026amp; Cure, Elegoo Mercury, Phrozen Cure). The UV flashlight is a handy spot-curing and inspection tool, not a replacement for your primary curing setup.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs the wavelength right for 3D printing resin?\u003c\/strong\u003e\u003cbr\u003e\nYes. Photopolymer resins used in 3D printing (Anycubic, Elegoo, Phrozen, Siraya Tech, and most others on the market) are formulated to cure in the 365–405 nm range. At 395 nm, this flashlight falls squarely within that range and is the most universally compatible option. Some dental or specialized resins may require 365 nm exclusively — check your resin's technical datasheet if you're unsure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow do I check whether a part is fully cured?\u003c\/strong\u003e\u003cbr\u003e\nIn a darkened room, shine the UV flashlight over the part. Properly cured areas will look uniform and matte. Any uncured or undercured resin will fluoresce differently — typically showing a distinct glow or color shift compared to the rest of the surface. If you spot undercured areas, apply focused UV light directly to those spots for 3–5 minutes.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre resin splashes really invisible under normal light?\u003c\/strong\u003e\u003cbr\u003e\nYes, especially small droplets. When washing parts or removing them from the build plate, tiny uncured resin microdroplets scatter everywhere — and they're practically invisible on your workbench, floor, or clothing until they dry or accidentally cure in sunlight. Under 395nm UV light, all those droplets glow clearly and can be wiped away with a paper towel and isopropyl alcohol before they cause problems. This is one of the most important safety habits in any SLA printing workspace.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy doesn't it include a battery?\u003c\/strong\u003e\u003cbr\u003e\nThis is a manufacturer's decision to avoid international shipping restrictions (batteries are subject to specific transport regulations). It's standard practice for this type of product. You'll need to purchase a regular AA battery separately (available at any supermarket for $1–2) or a rechargeable 14500 lithium battery. If you already have AA batteries at home, it works right out of the box.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs UV light dangerous to your eyes?\u003c\/strong\u003e\u003cbr\u003e\n395nm UV-A light is low energy — it falls in the same range of the spectrum as the everyday UV in sunlight that doesn't cause immediate burns. It's not comparable to a UV-C germicidal lamp, which is genuinely hazardous. That said, avoid staring directly at the LED while it's on for extended periods, and don't deliberately shine it into the eyes of pets or children. For normal workshop use — a few minutes at a time — no special protective equipment is required.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes it also work for checking banknotes or detecting fluorescence?\u003c\/strong\u003e\u003cbr\u003e\nYes, those are secondary uses covered by any 395nm UV flashlight. Euro banknote security markings fluoresce visibly under this light, as do invisible inks, organic stains (urine, blood), fluorescent minerals, and scorpions. If one of these is your primary use case, this flashlight has you covered — our catalog focuses on 3D printing workshops, but all the secondary uses are just as valid.\u003c\/p\u003e","brand":"Mr Resin","offers":[{"title":"Default Title","offer_id":54049774141777,"sku":null,"price":7.49,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0852\/0414\/0369\/files\/linterna_uv_para_curar_resina_3d_mr_resin.jpg?v=1782117428","url":"https:\/\/mrresin.es\/en\/products\/uv-light-395nm-3d-resin","provider":"Mr Resin","version":"1.0","type":"link"}