{"product_id":"405nm-blue-violet-adjustable-focus-laser-module-engraving","title":"405nm Blue Violet Adjustable Focus Laser Module – DIY Engraving","description":"\n\u003ch2\u003e405nm Blue Violet Adjustable Focus Laser Module for DIY Engraving\u003c\/h2\u003e\n\u003cp\u003eTake your DIY engraving and cutting projects to the next level with this compact 405nm blue-violet laser module. Designed for makers, hobbyists, and electronics enthusiasts, this precision laser module delivers superior engraving performance compared to red-light alternatives at equivalent power levels — making it an ideal upgrade for your existing CNC or DIY carving machine setup.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Choose a 405nm Blue-Violet Laser Module?\u003c\/h3\u003e\n\u003cp\u003eThe 405nm wavelength blue-violet laser is highly effective for engraving a wide range of materials. Its shorter wavelength means better absorption by most materials, resulting in cleaner, faster, and more precise engraving results. Available in multiple power options (100mW, 180mW, 220mW, 300mW, and 380mW), you can choose the right output for your specific application — from fine detail work to cutting thin white paper and moderately thick materials.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWavelength:\u003c\/strong\u003e 405nm (Blue-Violet Dot Laser)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Options:\u003c\/strong\u003e 100mW \/ 180mW \/ 220mW \/ 300mW \/ 380mW\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Focus:\u003c\/strong\u003e Manually adjustable focal length for flexible, precise engraving at varying distances\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e 3~5V DC — compatible with mobile power banks, phone batteries, or three standard dry-cell batteries\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNominal System Voltage:\u003c\/strong\u003e 12V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWiring:\u003c\/strong\u003e Simple two-wire connection — Red = Positive (+), Black = Negative (−)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Form Factor:\u003c\/strong\u003e 12mm diameter × 45mm length — fits easily into most DIY laser engraver frames\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf-Contained Installation:\u003c\/strong\u003e Easy to mount and integrate into your existing engraving machine or custom build\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStyle:\u003c\/strong\u003e Mini — lightweight and portable\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Source:\u003c\/strong\u003e AC-compatible driver (batteries not included)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat Can You Engrave?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eWhite paper and cardstock\u003c\/li\u003e\n  \u003cli\u003eWood and balsa sheets\u003c\/li\u003e\n  \u003cli\u003eLeather and cork\u003c\/li\u003e\n  \u003cli\u003eFoam and thin plastics\u003c\/li\u003e\n  \u003cli\u003eDark-coated surfaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Includes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × 405nm Blue-Violet Laser Module (power option of your choice)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e This is a bare laser module intended for integration into DIY engraving machines or electronics projects. Always use appropriate laser safety eyewear rated for 405nm wavelengths when operating this device. Keep away from children. Never point at eyes or skin.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eMade in Mainland China.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003eFor guidance on laser product safety standards, visit the U.S. Consumer Product Safety Commission (CPSC) Laser Safety page.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What materials can this 405nm blue-violet laser module engrave?\u003c\/h4\u003e\n\u003cp\u003eA: This 405nm laser module works well for engraving wood, leather, cork, dark-coated surfaces, and cutting thin materials like white paper and cardstock. The blue-violet wavelength is absorbed more efficiently by most organic materials than red lasers, resulting in cleaner and more precise engraving lines.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What power source does this laser module require?\u003c\/h4\u003e\n\u003cp\u003eA: The module operates on 3–5V DC. It is compatible with mobile phone power banks, standard AA\/AAA dry-cell battery packs (3 cells), or any regulated DC power supply within that voltage range. A 12V nominal system is also referenced for integrated engraving machine use. Batteries and power adapters are not included.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this laser module safe to use at home?\u003c\/h4\u003e\n\u003cp\u003eA: This module emits a focused 405nm laser beam, which can cause eye and skin injury if misused. Always wear appropriate laser safety goggles rated for 405nm wavelengths, never point the beam at people or reflective surfaces, and keep out of reach of children. Use in a well-ventilated area when engraving materials that may produce fumes.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I adjust the focus on this laser module?\u003c\/h4\u003e\n\u003cp\u003eA: The module features a manually adjustable focus ring. Simply rotate the front lens assembly clockwise or counterclockwise to move the focal point closer or farther from the module tip, allowing you to achieve a sharp, pinpoint dot on your workpiece at your preferred working distance.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What materials can this 405nm blue-violet laser module engrave?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This 405nm laser module works well for engraving wood, leather, cork, dark-coated surfaces, and cutting thin materials like white paper and cardstock. 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