Anyone used JB weld Marine (cold weld)(also thanks to all)

[cyberpunx]

Hi all ive been advised to try the above named JB weld for small hairline crack see: http://www.ybw.com/forums/showflat.php?Cat=0&Number=2323960&page=1&vc=#Post2323960
anyway anyone used this with good results or? i am defo going to at least ry to fill the small bit. worth at least that then i'll decide.
cheers again john
just as always i come to this forum feeling right negative and lost mostly but ALWAYS come away feeling positive with ideas refreshed again.
thanks for the inspiration oh yes and the advice.
cheers again john

 

[peteK]

Yes,used it to repair exhaust elbow so far so good.

 

[starboard]

Used it on a leaking weld on exhaust water trap...has held for last year no problem.

 

[fishermantwo]

John,
I have used JB Weld for years on various projects. I prefer Devcon plastic steel but it is more expensive and harder to get. Devcon also has an extensive range of products do cover more materials such as titaniun filler which I have used.
I have used JB Weld and Devcon to glue alloy parts on my Gardner engine, aluminium window frames in a caravan, repaired corrosion in my Porsche 928 cooling thermostat mounting. Glued the alloy brackets that hold the A/C compressor on my Porsche, in this case I used ss washer to spread the load. Also glued in fresh metal on a BMW when cutting out rust around window frames when I was reluctant to weld.

The secret is preparation. The area has to be clean and dry. If the area has been covered in oil then a spray with brake cleaner will be an ideal preparation {watch your eyes}. Just spray and let it drip off, soon as its dry apply the glue.

 

[floatything]

I use JB Weld but prefer Chemica Metal - it is faster and I find it easier to handle. I've used it to repair a cylinder head and crankcase on a 650 BSA - initially as a teporary fix ...but it just lasted. I've also drilled and tapped it and it has stood up to quite serious tightening of a stud.

Well worth a try, but for a proper fix I'd say you need to get a welder in.

 

[BarryT]

As per my posting on your previous thread, if you need high temperature resistance I suggest you use Halfords Exhaust manifold repair kit as the epoxy in that has a higher quoted temperature resistance than JB weld which is why I chose it when doing my repair.

 

[cyberpunx]

again with thanks

 

[nigelmercier]

Isn't JB Weld just an epoxy, like Araldite? The tube I bought in the USA certainly is.

 

[fishermantwo]

[ QUOTE ]
Isn't JB Weld just an epoxy, like Araldite? The tube I bought in the USA certainly is.

[/ QUOTE ]

Both are expoxies yes, Jb weld and a lot of other similar products have metal fillers. Araldite is a very old but still a good product. Check out web pages for products like Devcon and see what is out there these days. Lots of aeroplanes just glued together.