how 3D Laser Etched crystals are made?
My friend has got one glass key chain inside some art work is done. I wonder how they have made that art work inside the glass.
The manufactures take a couple of lasers (2-3), each laser not having enough heat/energy to melt the crystal. Then they cause the lasers to intersect at each point that they want one of those little bubbles to appear and where the lasers intersect they add their energy together and melts the crystal. the placement of each dot is controlled by a 3-d graphics design inside of a computer.
Laser photo crystal engraving
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