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Engraving on a glass surface

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Posted August 3, 2016

As one of the most beautiful kinds of modern art, I would single out, perhaps, engraving on glass. Thin lines on a glass surface, coupled with beautiful lighting can produce a stunning effect.

To engrave glass we need a powerful enough laser.

Any other way of engraving will not help. Neither will do a CNC machine nor any chemical (relatively safe) process as the glass is a chemically inert material.

Now let’s go back to our favorite topic – laser engraving.

01

Theoretically, the glass melting temperature ranges from 400 to 900C. In practice, it is not possible in some cases to determine the composition or melting temperature of a glass sample in advance without the full specification of the glass preform.

According to our calculations, a 0.1 mm laser beam of a 3.5 W laser can give the temperature of about 400-500C at its focal point.

A 5.6 W diode laser with 0.1 mm grain will give the temperature of 500-650 C at the focal point of the beam.

02

For this reason, we are working at creation of a more powerful laser – of 7 W.

So, what do we need to do…

  • Create a raster or vector image in Cura or Inkscape.
  • Use a glass preform.

There is one trick: we need to put an underlying surface under the glass. We use ordinary black vinyl. It is practically non-combustible and does not form solid combustion products. The black vinyl film heats up and heats the glass, engraving the glass surface.

We turn on the laser and watch the process.

At the end we carefully wipe the glass!

Enjoy engraving with us! Don’t hesitate to contact us if you feel we’ve missed something.

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Source: EnduranceLasers

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