New tile engraving method

I would not argue with you regards the melting of the glaze. I’m only going by what apears under a microscope. To me someting apears to be melting, but I’m no scientist and can only discribe what I see. What ever happens it would seem that the titanium fuses with the glaze. How else would it become part of the glaze and not be removable buy scrapping. Is glaze the same as glass? I don’t know enough about it to say if there is a difference.

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