Personally I would not use glass for several reasons. If you are going to use your sewing machine on this top you will have a glass rattle all the time and the vibration could cause problems with the metal fittings Needless to say one wrong hit against the glass and you could have glass everywhere. Putting pressure over and over in the same area as you are cutting fabric could also be problematic. I know it looks really cool but I think it is not practical for a sewing area.