I bought the product described here and hoped to have experienced the least possible scrap rates despite poor reviews. At the beginning it looked like I was - like many other reviewers also - be disappointed: from the first 10 blanks 7 I could throw in the bin. (I worked with three different burners.) Then I am, however, came up with the idea of replacing with 8x speed to describe the blanks with a burning speed of 4X and behold, I had not a single failure in the remaining 15 blanks!
So for all currently have the blanks at home and upset every second throw in the trash: runtersetzen BURNING RATE to 4-fold.
As the blanks promise something they obviously can not keep, to be described namely the possibility to 8X speed, there are significant deduction. The 0% rejection rate at 4X burning but tear out again what. Durchwachsene 3 stars.