I have a glass measuring cup that I'd like to re etch. The lines are becoming very difficult to read. I'm guilty of putting this glass in the dishwasher every time I use it. I am hoping to find something equivalent to a salt water etching that can be done on metal. Does anyone know any tricks to re etch the measuring marks on the outside of the glass measuring cup? I'm really tempted to take the cutting disc on my Dremel and try to work in some new lines.