Cuts no thick glass

Property me because glass cutter to buy thicker glass to cut though the sit not succeeded. For thin glass so no problem 2-4 mm can be cut very well if the glass is thicker it becomes more difficult. So with 8mm I had no chance to cut the glass is sadly broken. As long as you do not want to cut thick slices of the product is really highly recommended but you should prefer to practice before something ^^