How strong is Jb Weld - Page 2

Site Notices

[ARCHIVED THREAD] - How strong is Jb Weld (Page 2 of 2)

Posted: 3/27/2012 5:41:21 PM EDT

[#1]

I once had a parts car come in that had a cracked block(4cyl) that had been repaired with a bunch of JB Weld and then had a metal plate screwed down over it.

It ran fine and I re-sold the engine to a customer - with full disclosure - who installed it in a customer car of his - with full disclosure - and that person was happy.

Posted: 3/27/2012 5:46:32 PM EDT

[#2]

Repaired some water jacket erosion in an aluminum cylinder head with it.

Worked for about 5 years, probably still good (engine has been sitting here for a long time).

Posted: 3/27/2012 5:52:28 PM EDT

[#3]

Quoted:
Strong enough to seal up octomom's cooch.

Ha, you sure?

I've seen it used to patch engine blocks before, but it's far from a weld.

Posted: 3/27/2012 5:57:29 PM EDT

[#4]

I used it to seal up my crank case on a yamaha raptor . It lasted a year . Honestly i forgot about it and never checked it again and i sold the bike and never had a problem

Posted: 3/27/2012 6:15:49 PM EDT

[#5]

I can't weld aluminum yet so JB fixes all the aluminum or other stuff I cant fix with the mig. Pretty good epoxy, my Jon boat would have sank a long time ago if it weren't for ol JB. Kind of a last resort deal though.

Posted: 3/27/2012 6:18:33 PM EDT

[#6]

I always thought it was kind of brittle. Only thing I would use it for now is nose weight in a model rocket

Posted: 3/27/2012 6:20:03 PM EDT

[#7]

Quoted:
I could weld it quicker than you could mix the epoxy.

Sometimes it is harder than shit to get a welder in where you need it to be though.

Posted: 3/27/2012 6:20:10 PM EDT

[#8]

JB Weld doesn't work with ethanol gasoline. I had to weld an aluminum carburetor float bowl after the JB Weld failed. Wire brush, 4 seconds at 45 amperes AC, 75% balance and 90 Hz. 12 cubic feet per hour pure argon, ceriated 1/16" tungsten sharpened to a point, 4043 filler rod.

I'm using a lot less JB Weld since getting my welder

Posted: 3/27/2012 6:22:21 PM EDT

[#9]

Quoted:

Quoted:
Would JB Weld be appropriate for locking the threads of a muzzle device to the barrel? So you don't have the pin and weld it?

Or would the heat from shooting be too high for it to work?

Too high. I tried to attach a comp to the end of my barrel. The JB melted.

Silver soder.

They've got high heaat shit. If I had the choice between a solder and jb weld I'd use the high temp jb and call er good. That being said nothing beats a mig or arc, except for thermite/maganese welding they use on the train rails.

Posted: 3/27/2012 6:51:29 PM EDT

[#10]

It's no Chuck Norris

Posted: 3/27/2012 6:53:30 PM EDT

[#11]

It's strong enough to function as an "in battery/out of battery" indicator on an AR dust cover.

Posted: 3/27/2012 7:00:14 PM EDT

[#12]

Army strong

Posted: 3/27/2012 7:07:57 PM EDT

[#13]

I have use it to patch a couple of rows in a radiator it is still going fine after 5 years. Also use it to patch a hole in the bottom of my wife's CJ5 gas tank more than 20 years ago and it still does not leak.

Posted: 3/27/2012 7:17:33 PM EDT

[#14]

It's good for making a replacement button for the switchblade you bought in Tiajuana.

Posted: 3/27/2012 7:21:00 PM EDT

[#15]

I put some on a dog's ass and it haired over in four days

Posted: 3/27/2012 7:33:16 PM EDT

[#16]

I was at HD today and there's about 4-5 version of JB weld now for plastics, wood, high strength metal, water applications etc.

Posted: 3/28/2012 12:09:07 PM EDT

[#17]

Quoted:
I was at HD today and there's about 4-5 version of JB weld now for plastics, wood, high strength metal, water applications etc.

Fiberglass version too.

Posted: 3/28/2012 12:10:47 PM EDT

[#18]

Quoted:

Quoted:
Would JB Weld be appropriate for locking the threads of a muzzle device to the barrel? So you don't have the pin and weld it?

Or would the heat from shooting be too high for it to work?

Too high. I tried to attach a comp to the end of my barrel. The JB melted.

Silver soder.

They've got high heaat shit. If I had the choice between a solder and jb weld I'd use the high temp jb and call er good. That being said nothing beats a mig or arc, except for thermite/maganese welding they use on the train rails.

Thanks! I did not know that. My stores have been holding out

Posted: 3/28/2012 12:14:54 PM EDT

[#19]

I knew someone who used it to repair a cracked radiator. Didn't work.

Posted: 3/28/2012 12:15:10 PM EDT

[#20]

Its pretty strong if mixed and applied properly, but it only handles up to about 500 degrees F. It also needs some surface area to get a good bond. Some edges etc are just not big enough to make it strong.