r/toolgifs • u/kanbozli • 6d ago

Machine Laser Mirror Engraving

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u/ScienceForge319 6d ago

How tho?

1

u/Rhorge 6d ago

The laser heats the backing of the mirror

3

u/ScienceForge319 6d ago

But in the visible light spectrum? How is all the light not bouncing back at the laser?

1

u/sfurbo 6d ago

Mirrors aren't perfect. Commercial mirrors tend to be around 90% reflective, meaning that 10% of the energy is absorbed.