How strong is steel reinforced epoxy (cold or chemical weld)?

Lance_dBoyle · Post by **Lance_dBoyle** » Thu Jan 30, 2020 10:42 am

I need to weld a nut to a stainless steel tube but I do not have a welder. I do have something called J-B Weld steel reinforced epoxy which I believe is also known as cold welding or chemical welding. I plan to have a threaded rod go through the tube and screw into the nut, and the rod, tube and nut will be subject to a lot of vibration. I wonder about the strength and durability of using epoxy. The product says it can withstand 5020 psi. Does anyone have experience with chemical welding? How does the bond compare to conventional welding? Do you have any recommendations or another way to securely afix a nut to a tube? Thanks

dewaltdisney · Post by **dewaltdisney** » Thu Jan 30, 2020 11:32 am

I used it to repair a cast aluminum Pressure Relief Valve on my vintage tractor. It was a pinhole that developed and oil squirted out. The repair was fine
I do not know how it will work for you but it must be really clean to get a good bond. I used carburetor cleaner spray.

I think it is worth a try for six quid.

DWD

Bob225 · Post by **Bob225** » Thu Jan 30, 2020 5:07 pm

Get it tig welded or use a rivnut imho

Rorschach · Post by **Rorschach** » Thu Jan 30, 2020 8:02 pm

Use the glue and then drill and cross pin it.

jaeger · Post by **jaeger** » Thu Jan 30, 2020 8:57 pm

Without a welder I'd also use a rivnut, for a one-off you don't even need the tool, it can be done without.

https://www.youtube.com/watch?v=I6H6wr7fJYo

Argyll · Post by **Argyll** » Fri Jan 31, 2020 8:46 am

You learn something every day. I didn't know what a rivnut was.

jaeger · Post by **jaeger** » Fri Jan 31, 2020 9:04 am

Rivnuts are very useful, you can also get them in stainless steel ( a bit harder to install) if OP wants to keep all the materials the same.

UHM Also has his own video (I forgot about this)
https://www.youtube.com/watch?v=f7yIqKnLGPc

Bob225 · Post by **Bob225** » Fri Jan 31, 2020 4:50 pm

If rivnuts are new, Cleco's will blow your mind http://clecofasteners.info/

Hitch · Post by **Hitch** » Fri Feb 07, 2020 3:22 pm

FLow drilling and tapping is a handy process for manufcturing...
https://www.youtube.com/watch?v=7YSVClLMp60

jaeger · Post by **jaeger** » Fri Feb 07, 2020 6:51 pm

Bob225 wrote: ↑Fri Jan 31, 2020 4:50 pm If rivnuts are new, Cleco's will blow your mind http://clecofasteners.info/

I first saw Cleco being used on 'A plane is born' I used to enjoy that series of 'A XXX is born'

Bob225 · Post by **Bob225** » Sat Feb 08, 2020 11:20 am

jaeger wrote: ↑Fri Feb 07, 2020 6:51 pm I used to enjoy that series of 'A XXX is born'

Wasn't that a Louis Theroux documentary

The cleco clamps are very good too

jaeger · Post by **jaeger** » Sat Feb 08, 2020 11:49 am

Last year at a car boot, I saw a box full of them but no insert tool, should have bought them but I just passed them by