re-appearing darkness

[simplyweb]

Screenman what safety equipment did you need to fix a chip on a submarine and did you get all the moisture out first

[simplyweb]

What happens does the resin mix with water or does it have the same effect as oil and water ,does the resin push the water to the outside of the repair.

[screenman]

Try it out, put some drops in a glass with some water and leave outside, there is stacks of UV around. You will find that the resin sets hard around the bottom and side of the glass, our always sets very opaque.

[Brent Deines]

Well I still have not had this happen to me, but it did happen to one of our technicians this week. I sure wish I could have seen the break when the bridge was removed, but I was not alerted until after the break was cured. It was a star break and all of the cracks filled very well, but there was still quite a bit of black air in the center of the break.

I told the technician to drill the center of the break out with an FG2 and try again to get all the air out, but that was not successful as the cured resin was creating a barrier that did not allow the liquid resin to flow into the air spaces. As a last resort I used an FG701 to drill a bit deeper and then used the slide hammer to open up the break a bit. I was not sure that even this action would open up the break enough to allow the resin to flow, but when I put the injector back on I could see the air slowly disappearing. It took quite awhile but eventually all but one tiny speck of air was removed from the break. I could have drilled again to remove the speck, but the drill hole would have been more unsightly and the location of the tiny air space was such that it will not affect the integrity of the repair.

I think the air was trapped at the edge of the break and an extra couple of pressure/vacuum cycles would have saved a lot of time and effort in the long run, but my reason for posting this experience is to reiterate the importance of doing a good job even if you have to take more time and utilize techniques that you don't normally use. As most of you know I seldom find the need to drill and almost never have to open up a break with the slide hammer, but if a repair has already been attempted and was not successful, this technique has worked well for me in the past and worked very well in this instance.

Thankfully the customer was not waiting for the car as the process to fill the partially blocked break was painfully slow.

[Ricersux]

I just had this problem yesterday. I go thru all the delta kits pressure and vacuum cyles and everything looks great till after curing. I had no air showing in either pressure or vacuum mode but I will be damned if air showed up after the curing! What gives? Should I have done a few more cycles even? I did 3 cycles after it appeared to be free of air.

Ps. I used the drystar and warmed the glass with a hairdryer during the repair.

[t4k]

I just had this problem yesterday. I go thru all the delta kits pressure and vacuum cyles and everything looks great till after curing. I had no air showing in either pressure or vacuum mode but I will be damned if air showed up after the curing! What gives? Should I have done a few more cycles even? I did 3 cycles after it appeared to be free of air.

Ps. I used the drystar and warmed the glass with a hairdryer during the repair.

I think this phenomenon has happened to all us at some time or another. Maybe the leaders at Delta can shed some light on this problem.

[Kgobin]

When you finish your pressure and vacuum cycles are you swiveling the bridge to see if the air has been removed from the damage? Are you viewing the damage from multiple angles? Lastly, I tried calling you I but got your voice mail. When you find time please call into Delta Kits because we would be more than happy to walk you through a repair.

[Ricersux]

Thanks for the help Korey! Talking to you on the phone helped greatly. After talking to you I decided to go out and try your suggestions on my practice shield with great success!

Thanks Again!

-Eric

[Kgobin]

No problem! I am glad that everything worked out for you. Always remember you can call into to Delta Kits and get unlimited technical support as everyone here is Factory Trained & Certified.

[Windshieldtech]

Can someone explain to me the process curing under pressure. How is that done with the bridge still mounted on the chip?