Toughened glass shower screen edge repair Edge chip repair in 10mm thick toughened glass shower screen leaves a clean, almost invisible repair with a safe to touch edge! 1 Original chip is harsh and has a sharp edge. 2 Close up of chip damage. 3 The polishing process gradually removes the chip 4 Next step of polishing 5 The polishing is completed 6 Only a very slight distortion is evidence of the repair see more repairs