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quarter MOA visionary
Picture of smschulz
posted
JB Weld is apparently good stuff and if you are a DIY Nerd like me you might find this interesting.

 
Posts: 23714 | Location: Houston, TX | Registered: June 11, 2006Reply With QuoteReport This Post
Go ahead punk, make my day
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I had a friend JB Weld an oil pan on a Minivan once. It worked for as long as he needed it too.
 
Posts: 45798 | Registered: July 12, 2008Reply With QuoteReport This Post
Nosce te ipsum
Picture of Woodman
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I've also heard of two-piece oil pans (cracked all the way across) being JB Welded back together.

In the '90s I glued a porcelain wall-mount "chair carrier" type commercial toilet back together with the glue which came with a white Knack roof rack (it was intended to cover the bolt-ends). One sniff of the solvents in the glue, and I knew I had the good stuff.

One corner of the bolt-on wall carrier mount flange was cracked from a heavy load at the rock club then in business. And these 3.5g flush gravity models were no longer produced due to the Energy Policy Act.

Sure enough, the glue worked and the toilet was saved. Wish I knew what glue it was!

This wood putty is good stuff.

 
Posts: 8759 | Registered: March 24, 2004Reply With QuoteReport This Post
Unflappable Enginerd
Picture of stoic-one
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I've had sliding interface machine parts made out of JB weld in place of Delrin, it's the real deal. Wink


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Posts: 6516 | Location: Headland, AL | Registered: April 19, 2006Reply With QuoteReport This Post
Master-at-Arms
Picture of apf383
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Longtime JB Weld guy here too.



Foster's, Australian for Bud

 
Posts: 7597 | Location: Stuck in NY, FUAC  | Registered: November 22, 2005Reply With QuoteReport This Post
Member
Picture of Perception
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If I need to stick parts together, JB weld is my got to.




"The people hate the lizards and the lizards rule the people."
"Odd," said Arthur, "I thought you said it was a democracy."
"I did," said Ford, "it is."
"So," said Arthur, hoping he wasn't sounding ridiculously obtuse, "why don't the people get rid of the lizards?"
"It honestly doesn't occur to them. They've all got the vote, so they all pretty much assume that the government they've voted in more or less approximates the government they want."
"You mean they actually vote for the lizards."
"Oh yes," said Ford with a shrug, "of course."
"But," said Arthur, going for the big one again, "why?"
"Because if they didn't vote for a lizard, then the wrong lizard might get in."
 
Posts: 3671 | Location: Two blocks from the Center of the Universe | Registered: December 30, 2004Reply With QuoteReport This Post
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quote:
Originally posted by Woodman:
I've also heard of two-piece oil pans (cracked all the way across) being JB Welded back together.



Bear in mind that there's very little load on an oil pan; so long as the epoxy isn't damaged by the heat and doesn't break down with the oil, it's good.

Epoxy is good for a lot of applicants, not good for some, and a failure in some cases.

Regarding the video at the start of the thread, yes, one could put just about anything under the head and get the engine to run...but putting the wrong product there doesn't really prove anything, nor will it last, and it doesn't speak to longer term exposure to high temperatures, pressures, etc, or what needs doing when it's time to remove the material and actually fix it properly, assuming it is fixable at that point and not badly warped.

Epoxy has it's place; we hold entire aircraft together with it and make aircraft out of it...but it's not for all applications.
 
Posts: 6650 | Registered: September 13, 2006Reply With QuoteReport This Post
Member
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Back in the bad old days when I was a Mazda tech, I repaired several drive key slots on 323 crankshafts. The crank bolt would stretch, then the balancer pulley would wiggle, eating the nose up on the crankshaft. Don't know how long it would last, but I never got one back. The repair probably outlived the rest of the car.
 
Posts: 1656 | Location: North Carolina | Registered: June 16, 2004Reply With QuoteReport This Post
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Picture of Orthogonal
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This is the really good stuff, aerospace folk really use it, and 2216 comes in a few other variants. Out of date tubes can be had on fleabay, still very usable and much cheaper.

https://www.3m.com/3M/en_US/co...10645+8710797&rt=rud
 
Posts: 520 | Registered: May 03, 2003Reply With QuoteReport This Post
my existence, while grotesque and incomprehensible to you, saves lives
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The primary advantage of JB weld is that it is dimensionally stable while curing (most epoxies shrink). Makes it work well in a variety of applications.


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Posts: 2492 | Location: Texas | Registered: September 27, 2004Reply With QuoteReport This Post
Happily Retired
Picture of Bassamatic
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Been using JB Weld for years but I have tried a few new but similar glues and they have also worked very well. Maybe they are getting some competition now.



.....never marry a woman who is mean to your waitress.
 
Posts: 5319 | Location: Lake of the Ozarks, MO. | Registered: September 05, 2005Reply With QuoteReport This Post
Woke up today..
Great day!
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JB Weld and JB Quick ROCK. I was in the middle of nowhere racing my dirtbike when a rock punched a quarter sized hole in the side case dumping oil everywhere. Layed the bike on it's side and applied two rounds of JB Quick, due to the size of the hole. An hour later I rode out of the desert 50 miles. I was impressed and it saved my ass from a LOT of walking!

3M makes some panel adhesive (sheetmetal) that is pretty much as strong as welding.
 
Posts: 1909 | Location: Chicagoland | Registered: December 10, 2008Reply With QuoteReport This Post
Never miss an
opportunity to STFU
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In the past, used a lot of JB weld, and similar items. About 2 years ago I started getting a bad reaction when this product contacted my skin. This included swelling in the face, abnormal breathing and general body inflammation. Later, I got the same reaction when spraying epoxy primers, paints, and clear coats (even when wearing a respirator). Just a warning if you use it frequently you may wind up with the same reaction.




Never be more than one step away from your sword-Old Greek Wisdom
 
Posts: 2298 | Location: SE Mich-- USA | Registered: September 10, 2002Reply With QuoteReport This Post
Nature is full of
magnificent creatures
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quote:
Originally posted by Woodman:
This wood putty is good stuff.



Thank you for this information.
 
Posts: 6273 | Registered: March 24, 2008Reply With QuoteReport This Post
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