Bubble trouble

[madscot]

Hi all, im new around here so i am hoping to pick up, and share, some good tips from you old(er) timers

Ok, does anyone ever find that the get a small bubble form in the pit resin when curing? Sometimes i dont see it for days, then i get a series of repairs with them. Obviously i can drill out the pit again and re-pitfill, but it never looks quite as nice as when i have not had to do this. One thing i have found is that the less far i drill down, the less likely it is to apear. Any tips on how this is happening and how i can minimise it?

Thanks

[all starr]

i try to not drill if at all possible and always keep your pit resin upside down from the case to applying on the repair itself. it has helped me to do that. best of luck

Jared

[Sneck]

Madscot,

I believe what is happening is when you apply the curing film to the drop of pit filler over the pit - surface tension keeps the thicker pit filler from actually going down into the tiny drill hole. Placing curing film over the pit filler does not necessarily push the pit filler down the throat of the drill hole.

What I do is after I apply a drop of pit filler over the "drilled" pit, I take either a needle or sometimes just the corner tip of my curing film and use it to "poke" the pit filler into the drill hole. Doing so helps ensure that the pit filler does infact fill up the drill hole. Make absolutely sure that you do not see any air bubbles prior to putting on the curing film.

Hope this helps.

[madscot]

Yes, i find a pin does help too before placing the film over.

BTW, when i say 'bubble', what i mean in a very very tiny black spot. It does not happen that often and its hardly noticable. I just like to have things perfect.

[tooldini]

I usually apply the drop of pit filler just slightly above the pit to let it run down towards the pit and then roll the tab upwards towards the pit. Since I starts doing it like this I have not had that problem The pin is a good idea also I have never tried that.

Jeff

[StarQuest]

Madscot,

I am one of the old timers in this biz your referring too!

If your having a bubble problem after capping repair and say it doesn't show up for weeks after repair.... Sorry to say this but it will always show up within seconds after applying curing tab! Just use your probe or pin to remove air bubble during capping!

I'm still patiently waiting for your response on how your dealing with bullseyes and trapped air! Do you really want help or are you to proud to accept it?

[madscot]

I often do remove any trapped air in the pit with needle/proble/tab coner, it just that very occasionally there is a black 'fleck' apearing about 30 seconds after curing, when i swear there was not air trapped between the repair and pit fill resign. I was wondering if a small bit of air had found it's was through the repair resign to the drill pit after removing the bridge. Or maybe, the resign itself has small air bubbles in it, due to being shaken up in transit to the repair? (i admit that seems unlikely).

I have not see it for a while anyway, i think it happened with a certain batch of resign.

It not a major issue, just trying to get involved in the forums really and wondering if there could be something else involved which had not occured to me.

And no, i am not to proud. I would not be here if i was.

Cheers all

[StarQuest]

Madscot,

From what you described, it may not be a pitting problem at all.

Sounds to me that your not allowing or providing enough time between vacuum and pressure cycles. Alot of this depends on how you introduce resins into injector stem. If you ever shake or try to force resin in to quickly, sometimes you will develope thousands of little air bubbles into damage. When that happens, you just have to be more patient getting all of these tiny little air bubbles back out. Prior to ever curing, one suggestion is try moving your injector away from damage and visualize what is taking place. If you still see a black spot in repair, that would normally indicate some trapped air. Additional patience many times will provide you with best results. Never force a repair! Be one with the glass.....and let it come to you!

Sorry to be so hard on you lately but that is something you really need! You'll do fine is this biz. It's good that you ask all these questions! I like that!!!

Shows you care about the services your providing.

[mafsu]

Since you see the problem more the further you drill, it seems like others have said that your pit resin just isn't getting all the way down in to the drill hole. Try holding your pit resin bottle below the pit and ease the resin into the pit slowly allowing it to enter the drill hole. If you apply the thicker resin too quickly it will simply flow over the hole leaving a bubble in the drill hole. Another solution is when you remove your injector; if you see the resin has come out of the drill hole apply a drop of repair resin before applying the pit resin. Do you wipe the pit after removing the injector? This (believe it or not) is the way I was originally taught. If so stop and your problem will go away. I'm guessing you don't since you don't have the problem all the time.

[L.R.]

When I First Started Repairing Windshields I Used To Always
Get Bubbles In My Repairs, Due To Me Droppig The Curring Film
Dirently On Top Of The Pit Resin, (trapping Air From The Top)
Then Found That When I Drop My Resin From Just A Hair Above
The Break Let It Run In , Then As Some Of The Resin Dripps Down
From The Break, I Letteraly Drag The Curring Film , Starting From
Just Below The Break Along The Windshield And Catch The Excess
Resin With The Film, And Top The Break With The Curing Film
And Now Never Get Bubbles.