Clay Bar windscreen

[Poorboy_racer]

Read some interesting reports here on the use of clay bars. So got myself one, well called quik clay actually. Gave it a try and was ok but not really blown away with it. Thing is, they are suposed to remove build up of impurities on your paintwork and windows. Seemed to work well on the glass so thought I would give it a go on my Mini. Bearing in mind the cars 32 years old the windscreen was a bit speckled. Cleaned it up great and was very pleased with the result. That is until I took the car (the day after cleaning the screen) on a 50k trip to a local car show. Got a small stone thrown up from a 4WD in front..BANG no windscreen! Could be just a coincidence but I think using the clay bar on an old windscreen may have done something to the strenghth maybe broken surface tension or something. All I know is that Im not going to use it on our XC screen. Need less to say I was more than a bit windswept by the time I got home. Not worried about the screen they are easy to fit on minis and I already have another one lined up, just ****ed about picking bits of glass up for the next 6 months. Even smashed my rear view mirror.