Well, I just finished ripping out some tile and mixing some JB Weld. This morning I heard a hissing noise inside my shower wall. I ripped out a couple tiles and found a pin hole leak from a copper pipe inside my shower wall spraying the drywall. The house is about 20 years old and the leak is not where two pipes connect, but is on a bend of the cold water pipe that comes into the temperature adjustment gauge. I patched the hold with some JB Weld (a compound that comes in two tubes, which you mix and then is supposed to harden as tough as steel). I was curious if anyone has used this before for this type of job or if there are any thoughts on whether this will be successful. These pipes are not very accessible and once I patch the wall and re-tile it I'd prefer not to open it again. However, at the same time I don't think I'm qualified to rip out the pipes and replace them. Is this JB Weld stuff a real solution or is there something else I need to do? Any help/advice would be greatly appreciated. Thanks in advance!!