Six months ago, an incompetent metal thief almost cut through the pipe leading to the cat converter on my truck. The cut was big enough to release smelly fumes and make an annoying sound. So, I headed to Home Depot, looking for a cheap patch.

An older employee recommended J-B Weld. I bought some copper wire and some J-B- Weld. I covered the cut with a few wraps of the wire, and then sealed it with J-B Weld. That did the trick.

I used JB Weld on my car's side mirror since it broke off, and that mirror is rock solid now. I barely used any as well and have a lot left. I wish I would have known about this before trying to use Gorilla tape (which wore off and left white residue on my mirror...maroon car), because it would never have even been noticeable that my side mirror broke. Why go to an autoshop and spend over $100 when you can get this stuff for less than $7. The fix itself considering how much of the product I used probably amounts to 50 cents. Now that's a steal in my opinion.

I used this to fix a headlight on my vintage bike. So easy, and worked like a charm! This was my first time using cold weld and tried it based on the other reviews. Followed the directions exactly. I was originally going to purchase the magic putty (or whatever it's called), but I'm really glad I changed my mind and went with this product instead. Definitely a good thing to keep around the house for quick repairs.

I'm surprised this product doesn't have more reviews.

I've used this product to repair things that seem impossible to fix. I had a hairline crack in my radiator... and it has held for over a year with this stuff on it (drain and cool and dry for at least 12 hours if you use it in such extreme conditions). I've seen this stuff used to repeair engine blocks. I have some holding my lamp upright after I broke the stand.

This product is easy to use and extremely strong. It's also toxic, so use gloves or tools to mix and apply. If you let the item cool, apply to a clean and dry surfance and you wait a long period of time, this stuff will almost certainly withstand extreme conditions.

There is also a line of wet weld and wuick weld products that are pretty darn good, but this is the best of the varieties if you can get the item dry and have time to let it set.

Use it on your car, your house or anything that you want permanently fixed. I had a statue that was broken during shipping and I attempted to fix it with Loctite. Needless to say, after it hardened I barely touched it and it separated. So I went to my toolbox and busted out the JB Weld. I thought it might be overkill like killing a housefly with a flamethrower, but if my statue breaks again, it won't be in the same place. I'm a construction auto-mechanic and I use JB Weld like kindergartners use crayons. If you daunt me, ask any auto-mechanic about JB Weld. It is indispensable.