• When it comes to stained glass art, one of the very first things that you would want to invest your money in is a stained glass grinder. A good glass grinding tool would save you time and stress and will almost certainly be the very first purchase of your career in glass. You use a glass grinder for shaping rough cut glass pieces. The site offers an extensive review on the things you should know, which models to buy, and which ones are best for your skill level.