![Amazon.com: FONLAND D3 Laser Engraver Engraving Machine for Metal Wood, 20W Laser Output Power CNC Automatic Laser Cutter Engraver Marking Machine, Engraving Area 280x230mm Amazon.com: FONLAND D3 Laser Engraver Engraving Machine for Metal Wood, 20W Laser Output Power CNC Automatic Laser Cutter Engraver Marking Machine, Engraving Area 280x230mm](https://m.media-amazon.com/images/I/612LxqH80IL._AC_UF350,350_QL80_.jpg)
Amazon.com: FONLAND D3 Laser Engraver Engraving Machine for Metal Wood, 20W Laser Output Power CNC Automatic Laser Cutter Engraver Marking Machine, Engraving Area 280x230mm
![Amazon.com: FONLAND D3 Laser Engraver Engraving Machine for Metal Wood, 20W Laser Output Power CNC Automatic Laser Cutter Engraver Marking Machine, Engraving Area 280x230mm Amazon.com: FONLAND D3 Laser Engraver Engraving Machine for Metal Wood, 20W Laser Output Power CNC Automatic Laser Cutter Engraver Marking Machine, Engraving Area 280x230mm](https://m.media-amazon.com/images/I/711kDSVZKxL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: FONLAND D3 Laser Engraver Engraving Machine for Metal Wood, 20W Laser Output Power CNC Automatic Laser Cutter Engraver Marking Machine, Engraving Area 280x230mm
![Laser cavity setup. The distances used are: D1 = 1000 mm, D2 + D3 = 408... | Download Scientific Diagram Laser cavity setup. The distances used are: D1 = 1000 mm, D2 + D3 = 408... | Download Scientific Diagram](https://www.researchgate.net/publication/308810253/figure/fig1/AS:492958899281920@1494541968715/Laser-cavity-setup-The-distances-used-are-D1-1000-mm-D2-D3-408-mm-D4-300-mm.png)
Laser cavity setup. The distances used are: D1 = 1000 mm, D2 + D3 = 408... | Download Scientific Diagram
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