[Brent Deines]

The age of the windshield and the extent of the damage are also factors, but I agree that heat and pressure are two of the primary reasons for flowering or the daisy effect.

I however would not recommend putting alcohol or any liquid on a hot windshield. I prefer to simply shade the windshield and use less pressure. Although we sell higher viscosity resins for those that prefer them, I use the same resin year round.

If you are leaving a ring of air it isn't due to any of the reasons mentioned above, it's because you are not getting the break properly filled. While curing under pressure may mask that problem, it will not change the fact that the air remains in the break.

I rarely cure under pressure and have no problems with leaving air around the edge of the break, but once again, if you are not using the same windshield repair system I am, curing under pressure "may" be necessary. I'm not saying it is necessary, I'm just saying you should not "have" to cure under pressure if the break is properly filled. If you search previous threads on the curing under pressure topic you will find my arguments for not curing under pressure, but your issue sounds more like.