The process for rotary engraving glass involves using a faceted rotary diamond cutter, an adapter that allows the cutter to “float” over the glass, and a liquid coolant system. Many manufacturers also offer special holding devices for engraving glass items, such as wine bottles. A primary advantage of rotary engraving on glass is that it produces impeccable results when the requirement is straight text and simple logos.
General tip: Color-filling, varying engraving depths and patterns, and beveling can all help make your engraving stand out.
—Bobbi Payne, Rowmark