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Setting the proper focus in your K40 – American Photonics
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Laser Lenses, Optics, and Focus - LaserGods.com
Amazon.com: Mssoomm 12mm CO2 Laser Cutter Focus Focal Lens D 12mm/ 0.47" Focal Length FL 101.6mm/4" with High Quality ZnSe for K40 40w 50w 60w 80w 100w watt CO2 Laser Cutter Engraver
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K40 ZnSe Focus Lens 50.8mm(2.0") With or Without Alignment Tool – American Photonics
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Amazon.com: Cloudray K Series Whole Set Incl Head and Mirror Mounts With Focus Lens D20 FL50.8 Mo Mirrors for 2030 4060 k40 Laser engraving Cutting Machine : Arts, Crafts & Sewing
K40 ZnSe Focus Lens 50.8mm(2.0") With or Without Alignment Tool – American Photonics
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