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Combo with one runner???

Posted: April 19th, 2014, 6:46 am
by h2oman
Ok folks, can I get your opinion on this one? In what sequence do you make a repair for the following: Your combination chip is right at 1" diameter, located in 6" from the top of the windshield itself and has a 3" runner (crack) running straight down. Share with me your thoughts please?

Re: Combo with one runner???

Posted: April 19th, 2014, 7:04 am
by EMCAutoGlass
My recommendation would be to drill/tap a bull's-eye at the tip of the 3" leg first, put your injector on, and fill it back to the break, but stop just short of the resin reaching the break. Cure it. Putting a piece of electrical tape over the break will keep it from curing any resin that might have gotten into the break. Next, repair the combo as you normally would. I generally drill/tap legs longer than 2", especially if the leg has surfaced, which they usually do after 2". You can run the corner of a razor blade over the leg and if you feel/hear it click, you know it's surfaced. If you don't fill this first, it will be difficult to get a good vacuum/pressure when you're on the pit. Plus, you've terminated the crack so it won't run on you when you put your injector on.
Good luck.
-Marty

Re: Combo with one runner???

Posted: April 19th, 2014, 7:42 am
by Mr Bill
I would tell them to get a new windshield.

Re: Combo with one runner???

Posted: April 22nd, 2014, 7:09 am
by screenman
I would go with EMC on any large commercial vehicle, on a car or SUV I would check out where the damage is an access from there.

Re: Combo with one runner???

Posted: April 27th, 2014, 9:05 pm
by GlassStarz
I would run my finger nail across the top if you feel it catch it goes to the surface. if no it's internal. The internal I would start at the chip and hope with enough time and cycles it should go to the end. The surface I go to the end drill and fulltime address the chip.