“…Due to the higher amount of tin in the tin side of the glass, and to contact of the tin side with the rollers in the annealing lehr, the two sides of the float glass often exhibit different properties. First of all, the tin side has lower strength and larger flaws than the air side [3][4][5][6][7]. Krohn et al [4] determined that the average size of the flaws for the tin side of a commercial float glass was 28.9 lm, in comparison to 13.0 lm for the air side.…”