Jolted_Chicken

Hi everyone. Started the make Gel Candles on the weekend. Surprised how simple it was (Perhaps it was becase all the info on this board is so easily available) I want to engrave the glass container but want to know if it is safe to do so. (engraved by profession) the container is a fish bowl, approx 10cm (4 inch) wide and 12cm (4 1/2 inch) high.