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 ...
When Jeremy Coller opened his online laser engraving shop in 2023 ... Coller said that his engravings use a higher lines per inch measurement than engravings from some other companies.
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