Scotch-Weld Nylon Bonder Structural Adhesive DP8910NS, Black, 45 mL Duo-Pak

I bought this for joining 3D printed parts that needed a very strong bond. When you get it right it's very strongly adhered, requires minimal surface prep. It can be tricky to work with though. It's very sensitive to the mix ratio. If you get it wrong, the surface of the cured glue remains tacky. If you don't have an application gun you can use a scale instead. The base and accelerator have slightly different densities, the ratio you want (by weight) is 1:9.546. Both the base and accelerator have the consistency of thick peanut butter and need to be mixed extremely well for several minutes. Like some epoxies, it's an exothermic reaction that can get away from you if you're mixing more than 10g at a time. You'll probably want to mix while cold in order to get more work time before it starts to heat up. I had to retry several bonds because it cured too quickly. I'm not too bothered by smells, but it was definitely pretty stinky during cure. But once you get the hang of it, very durable bond to nylon which is exactly what I was looking for.

There is no plunger mechanism for dispensing the adhesive and 10:1 mixing tips are required. You must buy these separate. The product description should tell us that. Not eligible for return so I have $25 of useless epoxy. I made separate plungers for each side and put 1/8" marks on them. I push out an 1/8" of the 'large' volume first, then switch to the skinny plunger and push out 1/8" of the small volume side. Mix them VERY well in a small disposable dixie cup. I wanted this for gluing a nylon spur gear to a brass rod. The adhesive did not adhere great to either one.

3M scores a win. DP8910 (NS Black) was recommended by a respected colleague for bonding to nylon. So I tested it. Some surface prep of both surfaces to be bonded is required, basically sanding and wipe clean with IPA alcohol. The factory directions are clear and thorough. BE SURE you get the correct mixing tubes (10:1) when ordering from Amazon. Lightly load the bond joint during cure. Once set, these bonded joints are here to stay, topside or submerged. Thumbs up performance.

bonds nylon great without any post processing, but the tube being $30 and the applicator being another $60 on top is not great.

I expected better form a normally trusted 3M product. The adhesive cured VERY slowly and remained tacky on the surface even after over a week cure time. accelerated the temperature to 140 degrees for 2 days. Used the 3M recommended application gun (3M Scotch-Weld EPX Plus II Applicator #01001) and mixer nozzle (3M(TM) Scotch-Weld(TM) EPX(TM) Mix Nozzles). I decided to run a simple test by squirting the adhesive directly on to a mixing board and mixed manually. Observe "gaps" in the extrusion of the activator from the tubes, resulting in an improper mix ratio. Instruction only describe using this procedure for the initial setup, but that did not completely eliminate air gaps or voids causing a bad mix ratio. For subsequent uses of this product, I applied the adhesive to a mixing board and manually estimated the 10:1 mix ratio and the product cured as advertised but still left a sticky film on the surface. I suspect his product has some anaerobic properties and will not completely cure when exposed to air.

Llego en perfecto estado 10/10

Excellent product. Read the application notes to make sure this is for the plastic/nylon you are attempting to glue. I used a scale to measure out the 10:1? ratio instead of buying the application gun.

Trying to bond nylon plug into a carbon tube. The 3M tech said this product would do the job. No luck. Plug twists right out after 48 hours... No one seems to be able to make an adhesive that works for this material!