Windshield Repair Forum

I have noticed on here that a lot of folks talk about bullseyes and drilling and I dont think some of the new people really know what a bullseye is so here we go
The true Bullseye is that circular break that looks different than other kinds of breaks and needs to be repaired much differently. (yes I know some combo breaks are both Bulleyes and crack that isnt what I am talking about here thats another fish in another pond)
The other breaks are cracks or chips and need to be drilled or flexxed often to work the resin in.
Drilling will do you no good with a true Bullseye here is why
Imagine you took a plastic funnel and stuck it in a coffee can of wet plaster with just the tip sticking out and let it dry soon you would have a big hunk of plaster with a little plastic tip sticking out now imagine you stuck that into a oven until the plastic burned off what would the hollow space that used to be the funnel look like?
Thats what a Bullseye in the glass looks like solid in the middle and a funnel shaped hollow running out. Drilling into the solid part wont get you any closer to the break area you have to take a awl or probe and dig a bit into the contact point sometimes to open up the hollow but thats all.
Working a Bullseye by cylcing from pressure to vac slowly working the resin into the complete hollow is the secret to not getting a ring or dead spot and when it looks like you have it filled leave it under pressure for a little while longer (I pressure cure at this point but I know many will say dont pressure cure thats a personal choice) Be carefull not to use too much pressure when filling a bullseye they often go to the laminate layer and if you try to go to fast and use too much pressure you will often get what is called a daisy thats when the resin is forced into the laminate layer leaving a big discolored area that looks like a daisy. The chance of a daisey can also increase when the glass is hot.
As a side note dry out is super important with a bullseye use whatever method you prefer but dont skip it even if you are sure there isnt any moisture pretend its tere and dry it out. The bullseye can be the easiest and most impressive repair when finished if done right many will be hard to find afterwards and you will look like a hero to your customer if not done well they will look like a big glob of cloudy mess result no hero status no repeat buisness

GlassStarz, you mind me asking which system you have? When all of you talk about the "Daisy" effect, you are saying the repair looks like "flower petals"? I have done a few on my practice windshiled, but they look like a "Daisy" before I even start. I've got the rubber band with a BB , and made a bunch of "bullseyes", and a lot of them look like a flower with flower petals around the impact point, and after I repair them, they look great (to me) but if you look just right, you can see the "flower petals" that are now filled with resin, but they were there when I "made" the bullseye with my rubber band and BB. I sure hope I'm making sense

Rowdy you are making combinations not bullseye's, try adjusting the amount of load you are putting into making the damage, or alter the temperature of the glass before making them. I tried to do a diagram of a bulleye on a previous post just recently to show that drilling was not required when working them so I agree with GlassStarz on this one, except to say we have found all bullseye's go down to the laminate, as basically it is a displaced cone shaped piece of glass. In fact if you look at any damage the exit point of the damage will always be larger than the entry points, except we do not have an exit point as the laminate prevents this happening.

rowdy

I think you are using to much pressure and to long to get a daisy on most of you breaks.... Are you using the GT resin or another brand?

GT I think he is saying the look like daisies before he starts which is the way a lot of damages come out when you use a ball bearing on a rubber band, if used to hard.

Sorry, I just reread the post and saw it this time.... If he would run the rubber band at an angle and let it skip across I think it may make the bull eye better more than a combo... What ya all think?

The type of break you create will often vary from one windshield to the next, but I find the rubber band and bearing to be difficult to control, and often get combo breaks instead of bullseyes no matter what I have tried. A hook tool works far better for creating bullseyes, at least for me.

I agree with some of what GlassStarz says, but as I have stated many times in the past, I rarely find it necessary to drill regardless of the break type. I also find curing under pressure and pulling a vacuum before the pressure cycle to be unnecessary and a waste of time. Again, many of my recommendations are system specific, so "always" follow the manufacturer recommended practices to get the best results with the system you use.

I keep throwing this back in because no one else seems to remember that the technique they use may not work well, if at all, with other windshield repair systems. I do not want Delta Kits users to struggle unnecessarily because they are using methods that have no value when using a Delta Kits system. By the same token, Delta Kits methods will not work well with most other windshield repair systems.

Good thread, informative, even though a bit technical for my little brain. LOL

Anyway I thought I would just throw in that there are bullseyes and there are combinations and then there are bullseyes that look like simple bullseyes but are really combinations in that they have a mostly hidden line or 2 inside them. Sometimes you don't even see the leg at first inspection until you start adding pressure, then all of a sudden there it is. The bullseye might fill easy enough but now a line shows, so you keep messing with it to get it to fill. The danger is overfilling the bullseye part trying to get the leg filled. So all the more reason to not just assume because it's a bullseye, no need to take as much care.

I've heard "bullseye maker" used a lot on this forum. Where can I get a bullseye maker? I thought I was making bullseye's with my rubber band and BB, but apparently its not a bullseye. My kingdom for a bullseye maker!

A hook tool works far better for creating bullseyes, at least for me.

Brent How does one do that?

I have a tool that look some what like a hook tool but use it the expand the glass from inside for reson flow.