
I used this to engrave on my 40 watt CO2 laser and it engraved well at 10% power and cut smoothly at 35% power. There was minimal odor except when cutting, which still wasn't too bad and was quickly removed through the machine's exhaust. Considering the cost of each part and equipment, they make a big profit for anyone with a small engraving business. After removing the protective film, the glass became crystal clear. I also prefer 2mm 3mm for engraving because the images look closer to the surface when flipped on the back.

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