A buddy of mine had an old snowmobile with a small crack in the engine block. We took a grinder and cut a v shape into the block around the crack and applied JB Weld over it. It was definetly not a permanent fix but he was able to ride it through the remainder of the winter and part of the following winter. It's holds up really well for a lot of things. We both were very surprised that the stuff lasted as long as it did. Since then I have kept some around and have used it for smaller jobs. I had an oil plug that got rounded off on an old 4-Wheeler. I JB Welded an old wrench to the plug so I could remove it and it worked like a charm. Had to buy a new oil plug of course but I was going to have to do that regardless of how I removed it.

 

Cracked engine block!

Drilled out the crack under blown head gasket, cleaned it and filled it with JBW! Installed new gasket with sealant and let it dry a day or so. Worked just fine!

SD

 

Works AWESOMELY as rifle bedding compound.

 

More than a few years ago, a few teenage criminals used it to epoxy various things together at the high school: Such as doors, windows, locks, sink knobs, lockers, desk drawers, etc.

 

I always keep it on hand. The steelstick putty type and regular jb weld. I have temporarily fixed all kinds of things with it. At home and at work. It can definitely get you out of a bind.

It's amazing some of the things we have temporarily repaired in the refinery to get by. Sometimes it might just be some on a broken part to keep an instrument on control that was leaking instrument air.

Other times we have used it along with a hose clamp and a small piece of sheet metal on an actual process line to keep it from leaking until a more permanent repair could be made. Such as an actual engineered clamp or a more permanent patch welded on until the equipment can be taken out of service sometimes years down the road. It can be a lifesaver.

 

Repaired a hole in a lawn mower gas tank and heal a crack in a motorcycle front fender.

 

Have used it with denim to make micarta. JB cures to a gray color that works pretty well with blue denim for that application.

 

I got a Kawasaki 175 (1973) that the rotary valve had come apart. I wasn't about to buy a new one if there was more wrong than that, so I JB'd it back together and it fired right up. I ended up giving it to a friend and told him about the "fix". I don't have any idea how long it lasted but he never complained.

 

I've used it to repair the gouged mating surfaces of 2 stroke motorcycle engine cases that (someone else) took apart with screwdrivers. Repair lasted effectively forever. My dad used to build ultra modified snowmobile drag race engines in the 70's and early 80's--he drilled holes in the sides of the cylinders where the transfer ports exited into the cylinder so he could hog out the ports, then filled the holes with JB Weld. It worked fine for the application.
I've also used JB Weld to build up and reshape the ports of both 2 stroke and 4 stroke engines. Never had trouble with the material coming loose.

 

J.B. Weld is wonderful. It is so damn hard, it is machinable. It's great for making repairs on mechanical things or machining it into replacement parts.

 

In '81, I dented the oil pan on a big block (FE) Ford motor. Didn't know it 'til we cranked it over to build up oil pressure and it sounded like an amplified oil drum bein' banged on by a meth freak with a sledge hammer. In the truck, we couldn't pull the pan 'cause the cross member was in the way no matter how we tried to turn the crank journals to line up. Drilled a hole in the deepest part of the pan and used a slide hammer dent puller to pop our the dent, put in a sheet metal screw to thread the hole, backed out the screw and cut/ground it off so it'd just barely stick through the pan and coated it with JB Weld and screwed it in. Let it set overnight and coated everything in the outside with more JB Weld and when I got rid of the truck about 5 years ago the repair was still holding. Can't beat the stuff.

 

Small block chevy block, it ran another 6 years.
Multiple knife handles
A couple axe heads
A crack in my horses hoof wall
Lots of other stuff

 

Temporary repair (cosmetic is the only reason it was temporary)--on a large RV rear view side mirror.

SS fitting on the railing of a boat--5 years later still strong as ever.

Know of a mechanic repaired the head of an aluminum block GMC 6-71 engine, with JB weld. Lasted many years.

I have used it many times, for many repairs--I keep the round glob, the Qwik and regular JB weld in my repair kits.

 

Hole in a 14' aluminium boat. Thumb sized hole I cut a beer can into a couple pieces JB welded one to the outside and let it sit overnight then I filled the hole with more JB and stuck another piece of can on the other side. No leaks in 10+ years.

 

My car is one of those that has a hard plastic water bottle as reservoir for the radiator. It builds up some pressure inside when the engine is hot. One day I noticed a little steam coming out from under the hood. Opened it and found a long hairline crack in the top of the water bottle. Couldn't find one without spending $175 at a dealership, or buying salvage. Didn't want to do either at the time so I mixed up all of both tubes, smoothed it over the crack and about 1" either side of it and extending about 1" past the ends of the crack. Let it dry a couple days before putting in more water and driving it. That was about three years ago. I check it periodically but so far it's still holding. The tank is getting that crumbly, powdery film on the outside so I think at some point I'm going to have to replace it before it totally blows. The JB Weld is holding up better than the tank. Maybe I should coat the entire tank in it....

I've also used JB Weld for flower pots, to put antique light fixtures and lamps back together, to plug a pinhole leak in an old Dietz lantern fuel tank. Probably a bunch of other stuff I can't recall.

Funny because I was looking for some this morning, thought I had some but I guess I don't. I want to repair a crack on the leg of a small wood stove that came out of a train caboose.

 

Fixed a cracked transfer case, a muffler, and a gas can.

 

A very useful item to have before or after SHTF.

 

I used JB weld when after drilling an engine block to install a block heater in my 1845 Case skid steer went bad. I filled it around the edges, let it set up, redrilled, threaded and installed the block heater. This repair never leaked and lasted for over 15 years.

I have used it for other things but this fix sticks out in my mind, great stuff.

 

I used it to repair an engine head on a big block Ford where the exhaust manifold bolts on. I also had an engine head that the valve cover threads were stripped out. I drilled out the hole a little larger, cut a small piece of threaded rod and JB Welded it in the the hole I drilled. Worked like a charm.

 

I've used the water weld and steel stick. Also used the regular, but it's a bit messy, I like the putty's better.

Mostly I use it on plastics, but I've also used it to fix an old gas can and some ceramic fixtures and had no problems/leaks. Solid stuff, pun intended.

 

I JB welded the primary venturi back into a thermoquad carb where the casting had broken. It's been together for more than 7 years and still holding up fine. Also fixed a puncture in a 7 gal water jug that I use for camping. Worked great.

 

Thermoquad. Now that's a word I haven't heard in a very long time :thumb:

 

I've used it to bed a couple of rifle stocks. Works great and is a lot cheaper than buying a bedding kit.

I also used it in an emergent situation on a 100-psi steam pipe. We drilled holes at each end of the crack, slathered it with JB weld, shaped and welded a small plate over the JB Weld. We replaced that section of pipe as soon as we got back into port, but I'm confident that the JB Weld repair would have lasted for years.

I always have some JB Weld in my shop, it's great stuff.

 

I know somebody who screwed up drilling a trigger pin on an 80% lower. Filled it with JB Weld, re-drilled and used anti walk pins to make sure the pins were stable. Worked like a charm and the anti walk pin hid the JB Weld.

 

I have used it on many things, but probably my most surprising success was using it on messed up threads putting in a brake Zerk. The Zerk was rusted badly and I finally had to easy out the threads of the Zerk, this left a mess of the threads and when I tried to put in a new Zerk it wouldn't tighten up.

I was on a trip and had few tools or anything with me so I bought some JB weld and used that around the Zerk threads and allowed it to setup. I drove that truck for several years after that and even used that Zerk a couple times to bleed the brakes and never had an issue with it.

It was interesting how well it worked because it gives a warning not to use JB Weld on anything exposed to gasoline, brake fluid etc, but it worked great, it was quick and it was easy and it got me back on the road.

 

had a badly rusted wrought iron railing must have been 75 years old and was not replaceable, i took a wire cup and angle grinder and cleaned off all old paint and rust down to bare metal, then filled in the rusted out areas and voids with jb weld, let it set and ground it to shape and repainted the railing looked pretty good when i was done. it has been there for over 10 years and still looks good.