Repairing Vertical Windshields

[jonnyques]

Hi I did a small bulls on a chev cargo van the other day. The bulls was almost compleatly covered by the injector, so it was small. While this is not a vertical shield it does stand up relatively vertical. The repair looked great from the inside, and I cured under preasure. I got ready with the pit filler and tape, poped the bridge and did the pit and tape fast. After the cure I noticed there was some black at the top of the bulls. I know it wasnt there under preasure or after removing the bridge. I couldn't help but think that the resin had slightly run out. So my question is how do you do repairs on vertical shields? I know some of you do buses transports, RV etc. There must be a different method to do these than on a car. Iam using all Delta. Thanks for the insite
John

[CPR]

You may be rushing the pit fill and tape application, causing the air bubble. Just take your time and dont worry about your resin running down the windshield.

[jonnyques]

What part would I be rushing? I figured I want to get the bridge off fast and the fill and tape on to keep the resin from running out. Am I missing something? Thanks CPR

[CPR]

I just got the impression from your post that you were putting the pit filler and tape on fast, if I think there will be a problem with this step I will use my probe or a pin to make sure there are no bubbles in the pit.

Also with the Delta injector you can move it off the repair to inspect it and swing it back if needed. I dont think Delta recomends curing under pressure, but I will cure for about 60 seconds before removing the bridge.

[jonnyques]

Thanks for clearing that up. I see what you mean, take the time first to make sure it filled before the filler. Like I said Im always afraid the resin will run down and out if I take to long.

[screenman]

There is no more reason why resin should flow out of a vertical than any other screen.

I would suggest if your equipment allows you to, that you try sliding the injector to one side for your final inspection and alllowing a few seconds for the repair to settle down before you decide if it is finished or not.

I have never found the need to rush to put the pit fill on, in fact I quite often cure for a few minutes before I pit fill.

What you might be seeing is moisture that was or air that was compressed during the repair. Do you pull the injector of the screen when it is on the pressure cycle. I always train people to take it back to a neutral pressure before final inspection.

[mafsu]

using a mirror might make it a lot easier to see what's going on with your repairs. Espescially those that are smaller then th size of your injector.

[jonnyques]

Yes I alwas remove it in the preasure cycle. Does delta's hav a neautral point? I thought it was preasure or vacuume? I thought if I remove it in Vacuume it might suck some of the resin out as I lift it. Perhaps I'm just parinoid that the resin would run out (gravity) on a more vertical shield. Is this true on a bus or truck? That is dont wory about the resin running out? What your saying is giving good things to think about. When I have removed the injector and waited 10 sec or so I might see some black. I have associated that with resin running out. Perhaps thats not the case at all rather than its still air that has been compressed in the preasure cycle now just returning to it neutral state. This would indicate that it need wore work. I may very well have been reading what I've seen wrong. MAN this learning is fun. I have to say I'm impreased with my personal advancment with this. I look at where I come in the past few months. I hpoe you guys don't get tired of my questions as your help has gotten me where I now feel I am. Everytime one of these light bulbs go off over my head I feel I ve taken another step to becoming profecient in this trade. Thanks again!
John

[GlassStarz]

Pressure cure

[mafsu]

Starz if you read the original post he said he did pressure cure. I actually think the problem was that he was unable to see the bubble until he pulled the bridge off. A mirror would have cured this.