3M Panel Bonding Adhesive, 08115

Wow!!! This stuff is fantastic. Grips like no other. Goes on easily and cleans up just as easily. It hardens quickly yet has a long enough window that you can work with it after applying. It's not cheap, but if you're doing auto body work, YOU NEED THIS.

3M Panel Bonding Adhesive, 08115 works great! I used it to completely cover small rust holes in the roof of my truck. I didn’t want to pull the windshield so I taped around it and mixed the 3M Adhesive with fiberglass and placed it in and over the larger 1/4” holes. I let it dry overnight and it is ROCK HARD! It might be overkill, but I didn’t want the mess of pulling and reinstalling the windshield and welding up the holes. This stuff may be a little expensive, but it’s well worth it and I don’t have to worry about any more rust at the top of the windshield and roof! BTW, I also over-coated everything with POR-15 as an extra layer of protection.

Great product… first time using… researched videos of how to apply and had great results.

I tried the other brands of panel adhesive. They worked fine for small patches, but for 50" panels they lacked strength. So I was forced to use 3M. It was comparable to welding after one week and has worked flawlessly.I use it at work on body panels and it works perfect if you follow the directions. And yes we do weld some spots as required on a large panel. It does an excellent job as a steel adhesive.

It provides a strong and reliable bond for my automotive repairs. The two-part epoxy is easy to mix, and it sets quickly, allowing me to finish my projects without delays.

I recently used the 3M Panel Bonding Adhesive 08115 for a vehicle restoration project, and it exceeded my expectations. This two-part epoxy adhesive is OEM recommended and comes in a 200 ml (6.75 fl oz) cartridge, making it suitable for various automotive applications.

I used 3M 08115 for the first time on my 1954 Chevy Pickup that needed some small patches on its holey roof and firewall. I chose this product after many hours of research and debating vs welding, braising, fiberglass, and other products. the le reason why I chose this is because welding large surfaces such as a roof can warp the roof if not done properly and even then there is no guarantee. Another reason is that welding melts both metals down and can potentially inbed impurities and rust into the weld only to pop up later. With this epoxy you eliminate the potentially for any of this to occur. This is probably some of the reasons why most car manufacturers are using this product to secure their panels on their cars in lieu of welding. Also, because it seam seals all in one step. From all the forums posts and reviews that I read I was unable to find anyone that had actually used this product that wasn't completely satisfied with it's performance. I borrowed a really nice gun (it requires a double tube epoxy gun btw) from a friend and went to town. It applies like hot peanut butter, gives you plenty of working time, smooths out flat, and it cures hard as steel. I love it. I have since used it on other projects and it has performed great. Some tips: It says on the product material that you can reuse it by leaving the tip on there, let it dry and leaving it on till you need it again at which time you just unscrew it and put a new one on. I read this after I have cleaned the outlet very well and put the top back on. This can be a little tedious. Using the used tip seems a lot easier to do. Another tip is that I was working with small 2"x 2" patches for my non structural hole repair. I found that using small yet strong magnets to keep the patches in place as they dried worked awesomely. For the intended application, it is the best there is. Try it and you'll agree.Update....... I have used this product a lot since this posting and continue to be in awe of its strength and ease of use. I can see most welding falling into antiquity when everyone finally brakes from what they are used to and tries this stuff. BTW for shorter claiming times, apply heat from a heat gun. It sets up in about three minutes. Another benefit to this product is that you can bond unlike metals such as steel and aluminum and since there is a layer of epoxy in between them you don't have to worry about them reacting with each other causing galvanic corrosion. sorry for the long-winded review but I hope you find this helpful.

Have used this material on multiple custom car projects and it works extremely well. You can also use it to fill small holes and make surface repairs as it can be sanded when cured. MFG recommends a high grade primer before top coating. This 08115 is the faster setting compound (90 minutes work time) and has worked in our shop when its colder outside, just like an accelerator (low temp accelerator) in auto painting. It has successfully cured clear down to 40 degrees, then the part was put out in the sun for final cure. Can be re-used at the partial tube amount if you are careful putting the cap back in and not mixing the compounds from cap contamination. MFG says the shelf life is up to a year, make sure to check the product you receive as there is a date stamp on the tube showing when it was manufactured and in some cases when it expires in case you get a batch of old new stock. Strongly consider using this in place of welding where appropriate. Best to use bare metal to metal, scuffed up or with grind / sand marks to give it best chance of adhesion. The gun applicator is expensive as is the material, however the expense quickly fades when you realize how useful it can be.