Posted: May 17th, 2004, 6:20 pm
graybeard,
Sounds like one of those weird unexplained crop circles you read about all the time
Just kidding buddy 
OK.....this distortion or dimple appearance is probably caused by the pvb effects that screenman stated. I've experienced this before when working on older shields where the lamination will separate just enough to allow resin to seep outside the damaged area. The ripples or waves may be caused by creating small little stretch marks to this very fragile pvb. When working on these you might want to start your repairs with less injection pressure and work your way up to get legs filled.
If this happens working with a new shield then something else is going on.
Probably not much help....but I tried
Sounds like one of those weird unexplained crop circles you read about all the time
Just kidding buddy OK.....this distortion or dimple appearance is probably caused by the pvb effects that screenman stated. I've experienced this before when working on older shields where the lamination will separate just enough to allow resin to seep outside the damaged area. The ripples or waves may be caused by creating small little stretch marks to this very fragile pvb. When working on these you might want to start your repairs with less injection pressure and work your way up to get legs filled.
If this happens working with a new shield then something else is going on.
Probably not much help....but I tried