3M Windshield Repair Kit, 08580

I have always used 3M car care products (headlights restore, scratch repair...) and have a great experience with them. I was a little skeptical with this one only because I have a specialty windshield with a fairly deep, double bullseyes (the rock hit, bounced, and hit again about a quarter inch away from where it first landed), spiderweb, over an inch crack when I only had my windshield replaced less than a year ago. To my surprise, it fixed almost perfect. I suspect this will be a two attempt fix. A few suggestions -- Patience is the virtue of any cosmetic car care. Make sure you have time to work on it and don't rush it. Follow instructions closely and watch the video before ordering and make sure you understand the steps because they make sense and make the process go a lot easier. Make sure you have a workspace set up so you don't spill the resin solution like I did... If your damage is like mine that is bigger or your windshield is coated, repeat the first three steps and leave the solution there longer so that it closes the crack really well before putting on the surface coat and the plastic sheet. Leave the plastic sheet overnight instead if it is not being cured under the sun. Highly recommended. best $11 I have ever spent!

I bought this kit despite all the negative reviews. I was using the glass resin for a different project, and I figured that if it was 3M glass resin, it was probably pretty good.So, I put the resin on the cracked surface, and placed it in the sun....this is mid-february, mind you...and the resin is not hardening....so I put it back in the sun the next day...and so on...and it's still not hardening...???So, I remember that it needs UV light...not like I have one around...and they can be dangerous without special glasses, I believe...anyway, I finally realized/remembered: at my location on the globe, the sun's UV rays only reach the surface of the earth in significant quantities from about mid-March through late September...this is a rough estimate, but what I concluded (very unscientifically) is that this kit, if the resin does depend on UV rays to cure, will only work during about half the calendar year! Unless of course, you purchase, borrow, or rent a UV light (with eye protection, as well, for you and anyone else within sight).I'm really dissapointed that 3M would consider this a good end-consumer solution. Sigh...

All I can say is wear safety glasses when using this product.I went to push the plunger in to set the resin and it squirted into my eye and all I can say is that it hurts like nothing else in your eye and doesn’t stop for hours.

I've used this for multiple cracks on multiple cars. I just purchased my third 3M kit. I would rather buy just refill bottles of resin since the applicators I have still function fine, but cannot find the 3M glass resin sold separately. The kit is still inexpensive and I will continue to buy this as needed. I want to stay with this kit which I know will work rather than go to an alternate repair method.I understand the negative reviews -- the kit isn't perfect and my repairs certainly are not. But the applicator and the resin are tools that I found useful for repairing my own windshields. Sometimes my repairs go better than expected. Sometimes they are messy and somewhat frustrating. But on the whole, this kit has allowed me to keep star hits from spreading and postponed the need to replace my windshields.Manage your expectations and make the kit work. It is the resin into the crack that repairs the glass, not the plastic applicator. Use your own larger screws for the suction cups instead of the ones in the kit. Get a diamond drill bit if you need one to make a larger hole in the windshield to accept the resin. So what if you can still see where the rock hit your window... as long as the cracks do not spread, there is plenty of other glass to look through. I am a three-time satisfied buyer.

I buy this repair kit exclusively. It is easy to use and works great. Much better quality than other brands. I take the unit apart at the plunger and clean it out after use and it can be reused multiple times. Very good value compared to other single use brands. For small chips I just dab the liquid on and use a tissue to keep it from running. For larger chips and stars, I use the suction plunger set up.

I’ve come to always trust 3M products over others as in my past experiences they were always a step above the competition. In this case however, I can’t recommend this product to anyone. I read the directions in their entirety prior to trying to use the product and still failed miserably. The build quality of the plastic pieces are not strong enough.In my case it was a nightmare from the beginning. The rubber grommet at the bottom of the guide you suction to the windshield above the chip fell out while trying to line up and again when inserting the second plastic piece that pushes the resin down into the chip. This second piece also has a rubber piece on it that fell off inside the tube.Even after managing to work my way through these obstacles the straw that did it in for me was when the second plastic piece snapped in half while trying to back it out a turn for one of the steps.I don’t know if I just got a bad one, but I’d recommend choosing a different brand.

If you are those kind of person who cannot see your windshield crashed, then you have to buy it.Why? because you never know when a small crack can get bigger, just because of the climate changes or vibrations.So, if you are driving and something hit your windscreen, do not worry, you have the tools with you