What if my cut glass bowl top edge is severely damaged and there is glass missing?
If the damage is so severe that it cannot be re-cut to the original cutting then smoothing and polishing may be the only option. Smoothing and polishing is just as it sounds: taking a rough jagged surface and rounding the edges, giving the item as much contour as possible and then re-polishing the area. This is by no means to be considered a restoration, as it will show repaired.