[Lionel Rocheleau], one of his lab technicians at DCRL was interested in doing some experiments with the laser cutter, so they came up with this experiment… By raster engraving a piece of ...

The TiO 2 is the important part; it changes color when heated by the laser, forming a deep black line that adheres to the surface of the glass. The glue is just there as a binder to keep the TiO2 ...