3MScotch-Weld Structural Plastic Adhesive DP8010, Blue, Extremely Strong, Plastic to Metal Bonding, 45 mL (1.52 fl oz) Duo-Pak

Expensive, but strong. Definitely worth it if you need to make a critical repair, especially on low surface energy materials that don't take to traditional adhesives. A tab completely snapped off of my polypropylene car bumper, and this was able to easily and securely reattach it. I was amazed at how strong the repair was over a very thin and narrow bond line.However, it does come with its quirks. First, you need to have the proper dispensing gun: I got a compatible generic one off of eBay since the genuine 3M guns are expensive, especially for a DIYer. Next, you definitely want to get the 3M mixing nozzles. Getting the right ratio squirting and mixing by hand is very difficult; I tried this once and it probably had just a little to much activator which significantly reduced the work time. Finally, it's a little harder to work since it's thicker and doesn't really run. You also need to make sure the repair gap isn't so small that all the adhesive gets squeezed out, or else your repair won't stick. For those types of really thin/close fitting repairs, you might be better off using superglue and a LSE material primer since it's a lot better at wicking into cracks

I purchased this glue to stick some Tefzel plastic brackets to the side of a gearbox that runs at around 115 Centigrade. Tefzel is the chemical name for Teflon so this is one heck of a challenge to stick teflon to something that has a surface temperature hotter than boiling water. This stuff works and you could hand 10lbs off the brackets after it stuck. There are just 2 drawbacks. It takes about 4-6 minutes to set even when the surface is already at 115C so for vertical surfaces you need to mechanically hold it in place whilst it sets. The other drawback is cost. Holy mackerel is this stuff expensive. For a one-off application it made sense but I wouldn't like to be paying for this stuff regularly.

I glued the hardtop on my 1997 Geo Tracker, with a Pro-Top hardtop. It worked perfect super strong. Takes 2 days to dry. Make sure you find the correct gun to dispense it. Only 2 companies offer it.

Finding the right gun and tips was a nightmare. I spent way too much money and time trying to find the guns and tips, to find out that the ONLY guns that work are 3M's. And 3M guns are VERY expensive compared to other guns on the market.It would have helped if 3M would have been entirely forthcoming about the required guns and tips you will need to use this product.There are other products that will bond plastic to plastic. I would suggest looking at all options for the type of plastic you are trying to bond with, and look for other products that will bond effectively, and maybe save a bunch of money on everything you will need to use this product

On the plus side, this will bind plastics that are very difficult for most glues to stick to. It creates an absolutely solid bond.But with great powers comes great other issues to consider. It's expensive. You do need the official 3M dispenser and mixing tips, which are also expensive. It smells pretty bad while drying, and it takes 48 hours for the smell to fully dissipate, so don't try to use it indoors in your office or home if you're going to be there. It's really sticky and you do not want this on your hands. The first time I used it to bond two plastic surfaces together I put it on not thick enough, so do make sure you're applying enough. I used it to bind a PLA print to a Pelican case, two plastics which really don't want to be glued together, and it's totally solid.I'm giving it 5 stars because when you need a glue like this, this is the glue you need.

Just get a 10:1 gun for $15 and modify with a Dremel. EASY!

I didn't purchase the accessory dispenser so I eyeballed the 10:1 mix, but it still worked to patch a HDPE tank.Cleaned the HDPE surface with isopropyl alcohol, then let it dry.I hastened the curing a little with a heater, then let it sit for 48 hours before pressurizing.The ambient temperature was about 42F.After it was cured it was about as hard as tire rubber. Doesnt seem to be resistant to abrasion because it has smal particles in it to ensure minimum thickness of the application. So those little particles makes the surface a little rough.So far has been resistant to gasoline for the past three weeks.

I used this to repair a polyethylene water tank on my boat. Fantastic bond!!! Super strong. Used it for other gluing applications, too. Not cheap, and you need a new applicator tip with each use, but you get what you pay for. This is one of 3M’s better adhesive products.