Just for Copper Copper Bonding 2" Dia Makes Up to 40 Welds

I love it. It works.

Ended up soldering my solid copper porch lights back together as the spot welds were failing on them. Was going to try this stuff but gave soldering a shot and they seem sold again.Watched lots of videos on this stuff and seems promising. Not sure I would trust it “in” my walls though.Crafts and outdoor plumbing sure.

Bought this specifically to use on badly pitted copper pipe (exposed to salt air). Did the best I could cleaning the pipe with 60 grit cloth, like instructed, but was highly skeptical due to the bad condition of the pipe. Instead of applying the glue in a wavy pattern, like the instructions say, I just put it on the (horizontal) pipe until it dripped off. Then coated the inside of the fitting, put it on the pipe, twisted for five seconds, then held it still for 7 seconds. Ten minutes later, it was solid.Could not believe it. The pipe was so badly pitted that the fitting wobbled on it before I glued it. Follow the instructions especially for prepping the surfaces.

I used this product to make a water cooled steampunk themed PC desk. Two separate PCs in the desk with seperate cooling loops with ~60 fittings. I had zero leaks and this was my first time using this product. I found the bond to be stronger than the fittings. I was able to get about 45 joints per bottle on half inch schedule k copper. Incredibly easy to work with. The best thing about it is if you are doing any kind of work where the copper needs to not be discolored this stuff is a lifesaver. If you solder the pipe you can sand the discoloration off and repolish but it takes forever. I will never solder copper again.

The product itself is good I've used it before but this was the worst I've ever seen and transportation almost 2 weeks getting a product from Illinois

fail on a pinhole leak. dissapointed maybe i didnt use it correctly.

Had to fix a leaky connection in an area where soldering was prohibitive, work great.

The just for copper package was open on one corner, and the product was leaking from the tube into the Amazon box and onto the product instructions, and 1/3 of the product was missing. I took off 2 stars for that, but the product appears to have worked (overnight, and not in 7 minutes), and the water pipe is currently not leaking, so we’ll see if the tube being open and leaking had any affect on how it works long-term.