{"product_id":"cloudray-co2-laser-molybdenum-mirror-38-1mm-dia-high-reflectivity","title":"Cloudray CO2 Laser Molybdenum Mirror 38.1mm Dia - High Reflectivity","description":"\u003cp\u003eIn this review of the Cloudray CO2 Laser Molybdenum Mirror 38.1mm, the bottom line is simple: hobbyists and small workshop operators who need a durable, high-reflectivity mirror for CO2 engravers will find reliable value here. The reviewer found the mirror's uncoated, polished molybdenum surface and precise Dia 38.1mm by Thickness 3mm dimensions deliver consistent beam reflection and a snug fit in retrofit K40-style systems. Performance and longevity are the biggest reasons to consider this part when replacing worn mirrors or building a compact CO2 laser path.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial and build:\u003c\/strong\u003e Forged from high-quality HQ molybdenum, the mirror is polished into a usable reflecting surface that resists scrubbing and mechanical wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize precision:\u003c\/strong\u003e With a precise Dia 38.1mm and Thickness 3mm, the mirror fits common CO2 mirror mounts and K40 conversions without excessive shim work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh reflectivity:\u003c\/strong\u003e The molybdenum surface delivers up to 99.2% reflection at 10.6um wavelength, improving beam throughput and cutting or engraving consistency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo coating required:\u003c\/strong\u003e The normally polished, uncoated surface removes concerns about coating damage from cleaning or reflected heat in high-power setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide compatibility:\u003c\/strong\u003e Rated for typical CO2 systems from 30W to 400W max, the mirror suits a range of hobby to light-industrial engravers and cutters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable finish:\u003c\/strong\u003e Molybdenum offers a high melting point and corrosion resistance, which helps the mirror hold surface quality over longer use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe mirror is a practical choice for makers, hobbyists, and small shops running CO2 lasers who need a robust replacement or spare that fits standard mounts and K40-style machines. It is best for users who value a long-lived, serviceable reflective surface and straightforward mechanical compatibility.\u003c\/p\u003e\n\u003cp\u003eUsers who require anti-reflective coatings for non-CO2 wavelengths, those who need custom mounting diameters outside the listed tolerances, or operators who must meet very tight optical surface figures for high-precision laboratory optics should consider specialized coated optics instead.\u003c\/p\u003e\n\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh reflectivity up to 99.2% at 10.6um improves beam delivery and processing results.\u003c\/li\u003e\n\u003cli\u003eDurable, uncoated molybdenum surface resists scrubbing and extends service life in workshop conditions.\u003c\/li\u003e\n\u003cli\u003ePrecise Dia 38.1mm and 3mm thickness fit common mounts and K40 mirror holders with minimal adjustment.\u003c\/li\u003e\n\u003cli\u003eWide power compatibility (30-400W) makes it useful across many CO2 machines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUncoated surface means it is optimized for CO2 wavelengths and may not suit non-CO2 laser types.\u003c\/li\u003e\n\u003cli\u003eSurface figure and quality are good for practical use but may not meet specialized lab optics tolerances.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHQ Molybdenum (Mo)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003e10.6um (CO2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e38.1mm (other sizes available)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e3mm (0.12 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower rating\u003c\/td\u003e\n\u003ctd\u003e30-400W (max)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter tolerance\u003c\/td\u003e\n\u003ctd\u003e+0 \/ -0.13 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface quality\u003c\/td\u003e\n\u003ctd\u003e40-20 scratch and dig\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Cloudray 38.1mm molybdenum CO2 mirror is a straightforward, workmanlike replacement part that delivers solid value for hobbyists and light production users. Its high reflectivity and durable uncoated finish make it a dependable choice for K40 conversions and standard CO2 beam paths, offering reliable performance without unnecessary cost for those who do not need specialized optical coatings.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this mirror fit a K40 machine?\u003c\/strong\u003e\u003cbr\u003eYes, the Dia 38.1mm size and 3mm thickness are commonly used for K40-style mirror mounts and usually fit without major modification.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the surface coated?\u003c\/strong\u003e\u003cbr\u003eNo, the mirror is normally polished and left uncoated, which enhances durability and makes cleaning less risky for the surface.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat power levels is the mirror suitable for?\u003c\/strong\u003e\u003cbr\u003eIt is rated for typical CO2 systems from about 30W up to 400W max under normal conditions.\u003c\/p\u003e","brand":"Cloudray","offers":[{"title":"Default Title","offer_id":48612690821339,"sku":"B07BJGYW66","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51Jm1Jn8ABL._AC_SL1000.jpg?v=1778364429","url":"https:\/\/gearmusthave.com\/products\/cloudray-co2-laser-molybdenum-mirror-38-1mm-dia-high-reflectivity","provider":"GearMustHave","version":"1.0","type":"link"}