That happens because the acrylic is fully transparent for 445 nm and 1064 nm wavelength. In other words – the laser goes through the acrylic or plexiglass hits the layer under the acrylic and then it goes back and hits the acrylic and that is how you get the engraving/etching to appear.
To do a laser engraving on acrylic or glass you need a diode laser with wavelength 445 nm or a DPSS laser with 1064 nm wavelength of a Co2 laser with wavelength 10600 nm (10.6 um).ĭiode laser and DPSS laser can only engrave on acrylic/plexiglass with reflective laser beam radiation. Watch a live video on how you may cut 8 mm dark acrylic with 8 watt diode lasersīest laser engravers for acrylic (plexiglass) An Endurance 80 watt Co2 galvo head installed on a unviersal laser frame: 4 mm acrylic laser cutting.Įverything you need to know about engraving/etching on acrylic (plexiglass) and glassĮndurance presents a detailed guide and lifehacks about engraving and etching transparent materials like acrylic (plexiglass) and regular glass – getting started!
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