JB Weld, Does it Work?

This video is about JB Weld, Does it Work? Does J-B Weld work? I have to affiliation with this company and this review is 100% unbiased.

No nonsense, honest review on a popular product.

[OiVinn-eqml]

The weight on top is what did it. It squeezed out all the weld in the middle. It’s actually better to just give it a light press (weight) to hold it down.

[jd]

The mount should of been cleaned prior to applying JB Weld. Always best to scuff break with sand paper to get to clean bare metal. Then I wipe down with isopropyl alcohol to remove any oils. Allow to dry, then apply JB Weld, clamp, wait 24hrs.

[RojoDiablo]

Vibration is the culprit here, I believe strongly that JB weld is not your long term solution, although its a darn fine epoxy. Your little Craftsman compressor looks to be a little beauty and they don't make 'em like that no more so fabricate a small metal plate or have it welded and then mount it on thick rubber washers to help minimise vibration... take good care of that little work horse!!

[lv]

You need to gloop it on thick, in otherwoods use up the whole tube on that, also do not put any in the break just over the top, it binds both pieces superficially, hope this helps

[swordfish]

These type of repairs work best if you drill a small hole (1/4" or smaller) in each piece and use a flat piece of steel or aluminum to connect them with a couple of bolts and nuts.

[Fpvfreaky]

It’s all in the prep mate. Sand down the area and clean real good. No oil or grease deposits.
When mixing make sure you mix well. And correct amounts.
With yours you should of really built that up around the area that was weak. It wasn’t enough . But good try .

[davadu]

the only way for jb weld to work is to leave a big amount of the glue on the outside right now I am convinced that is the only way it works as advertised, I have had some issues with jb weld I am currently still experiencing issues, what I have found is that if you dont care for how the piece looks like, meaning you dont care for aesthetics this works to some extent but if your application needs to be clean and keep the piece aesthetics then this in most cases wont work, right now I got to this video as I am on the search for structural epoxy resins that could glue aluminum to aluminum as my motorcycle fell and the thread piece in the radial master cylinder where the rear view mirror goes broke off and am trying to see if I could spare me some $$$ by using epoxy or whatever I may find.

a little recap on what I did so far:
I prepared the piece,
drilled some holes on both sides where it broke
with the dremel made some gaps to allow for better adhesion and allow for sort of a ring of glue to be formed on the inside as I carved the pieces,
when broken piece is seated they fit precisely and on the inside its hollow the idea is to fill with jb for more strength,
applied a generous amount of jb weld and made sure it went all the way in into the wholes and gaps on both surfaces ( with a metal wire made sure the jb weld went inside the gaps and wholes)
seated the piece and pushed it manually to allow for the excess to drip out.
removed any excess from the outside with some scott shop towel, and with a clamp made sure the piece was strongly secured into place to allow for a stronger adhesion,
fast forward 24+ hours I tried screwing back the mirror and even though jb weld stick to the aluminum the epoxy "monolith" that hardened inside the piece cracked and broke without even applying great force to the piece, wasnt even screwed all the way in before it cracked..

if anyone has an idea on how I can glue the piece I am open to suggestions.

[DavidThomas-gmgu]

You've got to clean the area thoroughly, grind it a bit, drill a few holes, and use a bit of wire to reinforce it .

[frankcrawford]

I'm at the 3 minute 11 second Mark into this video and I hope the JB works out for you I just prepared a table also with JB weld but I put a threaded rod through it and hopefully it'll work. Edit finished the video I was surprised at the quick failure.

[curiousgeorge]

What psi was your JB Weld. I would have drilled a hole for a bolt and tapped the matching threads. I would have still justed JB Weld as you did but also run my new bolt in. Should have been able to use it right away afterwards and it should hold for years to come.

[nigelbarker]

Adhesive joints don't work well in tension. So a simple butt joint is unlikely to hold up for very long. You'd probably have better luck with a couple of butt straps cut out of sheet steel bonded either side . That way you're taking advantage of the much better shear strength of an adhesive joint.

[jakexgold]

It should has metal plates glues to the broad sides as well, like wrapping sticks around a broken leg with tapes or ropes, so gluing more metallic plates to the broken joints' broad sides, apply more of the glues, more layers of metallic plates glues around the broken joint areas, it's about gluing up more contact areas. So it's like applying more "tapes" on the front and back sides of the broad sides, the "tapes" are smaller metal plates or fragments, glue steel rods (nail thickness) on top of the metal plates as well, so bundle it up like a grenade - combining of glues, plates, glues, plates, nails, rods, glues, so it's like a bird nest! But since you are using up so much of the glue, why not try pay for gas, electric welding or laser welding ?
6 packs of the glues costing $120 NZD ($21 NZD each pack), at a strength of 3960 PSI.

[potplucker]

Ty for the 411, JB Weld off the list. I use Gorilla Glue often but don't think it would hold up either. Guess new replacement part if could find might be best long term fix but might be a bigger job than wanted replacing. Welder sounds good and quick too.

[marcoantoniomejiamedina]

I think it would have helped to reduce material on the edges of both surfaces to create something like a fillet. It looks you coated it with a thin layer and it wasn’t enough material to hold the joint together.

[josephmoodie]

You could have used a Dremel with a small grinder wheel and made vertical slots on both sides and on both sides of the break then filled the slots with the JB weld and it would hold for years.
If jb weld can work on a car muffler it can work on anything.

[durangodave]

You would be better off drilling a hole in the top section and another in the bottom section then use baling wire or a pull tie to secure it together.

[cjtheus]

It worked for me 100% on my broken Thule Cargo Carrier Hinge.

[kingmike]

Does JB Weld make anything to patch the holes in your jeans.

[stinka]

Even though it didnt work out for you, thanks for the video.

[GajahMengaumTheBruce]

I just bought JB Weld for my diy stuffs. Your video makes me wonder if this glue will work well. Coming from Asia theres possibility I bought fake JB weld. I have been using 3M CA40H, its a great glue but I dont see anyone talking about it on youtube. Anyway, great video!