3M Scotch-Weld Plastic & Rubber Instant Adhesive PR40, Clear, 20 Gram Bottle

This adhesive worked great for my project which was to bond some 3D printed (PLA) items to polyethylene (HDPE). After 24 hours of curing the two items were bonded together as if they were one. There was a lot of surface area for the connection that I was bonding so perhaps my situation was optimal for this product but I couldn't be happier with the result. There's not a lot of instructions included, so it might be helpful to know how I used the product: - I started with both surfaces to be bonded in a horizontal position. The adhesive (and the primer are very thin and runny and this is the only way to minimize the mess. - I masked off the non-bonding areas with blue painters tape to further reduce mess. - I first primed the pieces by brushing the entire (cleaned) area for be bonded with acetone. Acetone is cheap and I had some (from Home Depot) so I decided to try it as an alternative to the expensive but official 3M primer. - I applied a thin layer of adhesive to the HDPE side, spreading it about a bit with a wooden stir stick. - I joined the pieces, clamped them together and carefully wiped away the excess with a paper towel. Note that the bonding is not immediate. Out of an abundance of caution I left the clamps on for 24 hours. Maybe another process would work as well, but that worked great for me. You end up using a very small amount of adhesive so the little bottle goes farther than you might think. To be honest I had serious doubts that anything would work to bond HDPE, and was amazed at how well it ended up working. Good luck!

After a lot of research I bought this glue to repair some tennis shoe soles that had started to come loose. I looked at lots of glues - instant, contact, two-part, etc., and eventually landed on this one. It is one of the more expensive adhesives, and it comes in a very plain, industrial-looking plastic container, no animals, colors or pretty pictures on the bottle, and in a plain cellophane wrap, but does it work? You bet it does. I can't quite believe the level of bond I got on rubber to rubber, it's amazing. There is absolutely no give, no sign of the edge coming loose again, it's very solid. At the price, I can see why you'd have reservations, so go ahead buy a cheaper one and be frustrated when it's not quite as good as you need. Then buy this one. I've been there. I write some reviews but not many, however this product got my attention and if you want something that works, get your wallet out, but this works. One more important "health and safety" thing. The small-print is *small* - it's really tiny, I used a loupe to read it. But definitely read it. My inner five year old came out and I smelled the glue while it was wet. REALLY BAD IDEA. Don't do that. It doesn't just smell bad, it smells dangerous. It made me physically recoil and it took a while for the weird feeling in my nose to go away, so don't smell it, and keep the product locked away from the wee ones. That's all. Great glue, easily worth the money.

I did a ton of research trying to find a glue to bond a soft plastic tablecloth fabric to a hard smooth plastic surface. I knew the usual glues that i use in my crafts were not going to adhere to the hard plastic. This stuff really works exceptionally well! It did not melt my fabric at all either. There was one small section that had some regular material as reinforcement over the hinge (that I left in place) that had some other kind of glue under it and there was a tiny amount of smoke when I glued over that but it was only for an second or two. I'm super grateful for the advice to wear gloves because my hands definitely would have been covered had I not because it is very runny. I also used shop towels to both absorb any excess glue and to press things into place - that worked great too. I'll definitely be purchasing more of this glue for future projects. I noticed that the directions on amazon mentioned using a bonding primer when joining polypropylene and polyethylene and I wasn't sure if I needed that but I didn't. I'll definitely be purchasing the primer too in case I need it in the future with this glue. BTW, I found the directions on the bottle impossible to read even with my bifocals! I highly recommend getting this glue!!!

Works good on 3d printed parts.Good

This stuff is absolutely amazing! Heck, I am writing a review about "glue!" I was a bit skeptical to say the least, but I am simply blown away how well this works! It takes a bit longer to dry and cure (this just depends on amount used is all, it can dry well within a minute). I use this everywhere now and on most things that need some fixing. *Depending where you want to apply this, I would use some/little rubbing alcohol to prep and clean the surface a bit before applying this stuff. Honestly, I will not buy anymore lame "super glue" after using this product by 3M.

just needed micro drop to repair ripped silicone headset boom. the glue like everything 3m is pricey. don't need this full bottle but it saved 200 buck headset, so it was worth not messing around. guess if break something else (or if half the city does lol) I got enough till it expires. 3m is used by serious businesses so you can find detailed tech grid on what product to use on what surface application. since I am not in automotive repair or whatever i just couldn't see getting the surface prep stuff its quite expensive. ...looked at it different angles. decided to just use good quality acetone from a hardware store as the stuff in the 3m site msds seems to be some sort of similar product. so prepped it with q tip and few passes of acetone, let it dry a minute, then a drop of the glue into the crack held the sides together pretty much immediately bonded...left it cure 24 hours for full bond strength like the 3m tech sheets say. worked great! still holding been using it couple weeks. genuine 3m ...just always does what it says...just make sure you look up your application and do it right. thank you 3M!

Delivered without any type of seal and half empty.

Works great for nitrile o-ring cord

Funcional.

Cumplió muy bien para pegar plástico en auto de lujo

Worked excellent for my project

Excelente calidad y precio