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Amazon.com: CNCOLETECH 18mm CO2 Laser Lens, Laser Mirror PVD ZnSe Focus Lens 101.6mm / 4" Focal for CO2 10600nm 10.6um Laser Engraver Cutting Cutter : Arts, Crafts & Sewing
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CO2 laser focus lenses… and Laser head size… does size matter - Community Laser Talk - LightBurn Software Forum
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