Dr. Monk's DIY Electronics Blog: Making Protective Face Shields with a K40 Laser Cutter - Part 1
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1610 K40 Laser Engraver with 130W/150W CO2 Glass Tube +RF30W/60W Metal Tube for Nonmetal Materials - China Laser Engraver for Glass, Laser Engraver for Wood | Made-in-China.com
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CCD Autofocus K40 Laser Engraver for Rubber Stamp with CE FDA - China CNC Cutting Machine, Laser Equipment | Made-in-China.com
K40 Laser Tube Mount (M3 Hex Head screw cutout + Spacer) by Ben | Download free STL model | Printables.com