How strong is JB Weld?

[Edward]

Masonry bits won’t put a dent in these stones unless the drill uses a hammer function.

What is says on the label (like steel) believe it ,how about engine block D+T for stripped bolt/Ed

[GhostHawk]

Good video, very imformative as to which products perform the best.

Then you can compare results vs price and find the right product for you.

That was actually a fun interesting way to start my morning.

[MaryB]

Friend had the crank case of his 20hp lawn tractor crack. He cleaned it off with multiple acetone washes, used JB weld, and used that mower for another 5 years before one of the pistons decided to go out the side... JB Weld wasn't repairing that!

[jonp]

Good video, very imformative as to which products perform the best.

Then you can compare results vs price and find the right product for you.

That was actually a fun interesting way to start my morning.

Best channel on youtube. He does testing on stuff guys and gals that fix stuff or build things themselves actually use. Motor oil, penetrating oil, screw drivers, skilsaw blades, drill bits and so on. No sponsors so real results. He buys everything from a box store himself. My first stop before buying anything. Nice thing is he usually tests cheap like HF vs expensive like Snap On and lets you weigh use vs price.

[KCSO]

There is a you tube video that covers this in exact poundage and pull strength. IIRR something like 50 foot pounds with a 1/2 inch bolt.

[GhostHawk]

Ok after ordering some new stuff similar to JBWeld I have a progress report.

Product is this.https://www.amazon.com/dp/B000AB4A8M...roduct_details

PC Products PC-7 Epoxy Adhesive Paste, Two-Part Heavy Duty, 1/2lb in Two Cans, Charcoal Gray

I paid 8.70$ for a half pound in 2 cans. Comes in 2 screw top jars marked A & B.

A is a light gray.
B is dark, almost black, and sticky.

I used a 3x3 piece of cardboard as my mixing surface.
And a 5" piece of heavy bamboo skewer with one end flattened down a bit on both sides as my mixing and applicator.

Project was a whisk for cooking that was coming apart. Handle came off. The wires were welded and left all different lengths.

I locked it in vice and trimmed even with hack saw. Then wound a strip of paper towel so I had about a 1" section for PC7 to settle into and stick.
I also took a short length of light copper wire and twisted it together to make a hanging loop. Trimmed the ends and shoved it down into the goop.

When the butt section was cured I went around the front connecting the wires to the tubing of the handle. Makeing a sort of non drip strengthening ring.

In the video he made a comment about the texture. While not as stiff as a putty, I found it easier to work with than my JBWeld epoxy which can flow as it sets.
It is stiff, just more flexible than a putty based.

This JB7 stayed put very well. For about the same price I got 2 tiny tubes of JB Weld that is easier to mix as it is more liquid. But harder to work with.
For under 10$ I have 2 large tubs and can make as much as I need without fear of running out. It does have a longer cure time. But that also gives you more time to work with it.

Once mixed the PC7 was very stiff. Stayed on my bamboo with dripping or messing. Once stuck in place I could hang in to cure. Come back in a couple of hours and improve the finish. As it was stuck, but still moldable. Would give under finger pressure without sticking.

If you have not figured out by now i'm pretty happy with this stuff. Good product at a good price. Easy to work with. 24 hours was not really solid for me so I gave my project 48 before calling it good and putting it into the Utensil jar ready for service.

Mix well, don't try to apply it until you have a uniform color.

[Electrod47]

I already posted about a hot rod build using JB. I remembered another event I did about 6 years ago. The bolts going into the manifold for the water pump on my OLD Kawazaki Mule were stripped out and leaking. Leak got so bad I thought I was going to give up on it and park it in the back 40's bone yard. Made up a batch of JB and slapped it back together. Ran fine for several more years NOT leaking before the engine "Gave up the Ghost". Those things run HOT in the summer also. JB held.

[David2011]

Sammy Shadetree stripped or blew a spark plug out of a Ford 5.4L head and glued it back in with JB Weld. I discovered what he had done a few hundred miles after I bought the truck when it blew out again. In retrospect, I was surprised that it held up as long as it did.

[MaryB]

Sammy Shadetree stripped or blew a spark plug out of a Ford 5.4L head and glued it back in with JB Weld. I discovered what he had done a few hundred miles after I bought the truck when it blew out again. In retrospect, I was surprised that it held up as long as it did.

Probably stripped... they corroded in place and it was so common Ford has a repair kit for it. When my truck went down the road to the new buyer it had 150k miles on the original plugs. I wasn't going to change them!!!!