Small ring around repair?

[tooldini]

I have a moisture evaporator but haven't really used it yet. I guess next time I will hit it up alittle to make sure if it has rained in the last couple days. thanks again guys

Jeff

[screenman]

Inspecting for moisture in a repair I find hard to explain. We always wet every repair prior to starting repair when training people, this helps people recognise moisture and also trains them to sryout and do the job properly from start to finish, I do not know of another school that trains this way.
Filling a nice clean dry damage is to easy we like to make the future tech think a bit more and put them in a real life situation.

[Dependable Dave]

Tooldini, you didn't say if the ring was white or clear. If it was white, then that is probably moisture, as FRIK says. You can tell if you go back in a few days or a week and re-inspect the work. The water will tend to soak into the PVB and leave a black ring, which represents an open, unfilled space. If the ring is clear, it could be a slight distortion from the fact that at the outer edge of the bullseye, which is at the bottom of the glass, a slightly deeper deposit of resin has been placed in a slightly larger open space. The cone of glass separates from the windshield and travels inward from the impact. It's possible that the PVB has a slight "dent" there, allowing more resin to be deposited there. The other reply also makes sense in some cases. Too much pressure, too thin resin, too high temperature can work together to cause "flowering". Usually, though, that occurs in an older break where the PVB has had time to shrink. And the flowering usually exhibits itself by allowing resin to flow out beyond the cone, which you didn't say happened. I've been using Glas-Weld 2030 for years and find it too thick for most of my repair, unless the break is old and the PVB has shrunk. I've seen the clear ring in repairs using many different viscosity resins. It's only a theory, but I believe in the "distortion ring" theory laid out above. Anybody else got an idea about this phenomenon?

[tooldini]

Thanks Dave I should have noted the ring is clear and note extremely noticable. It is around the entire edge of the damage. It seemed to happen on 3 of the 4 chips that I can recall. The chips were of unknown age he said at least over 1 year old. Thanks everyone for the help and ideas

Jeff