jb weld - SailNet Community
 
LinkBack Thread Tools
post #1 of 10 Old 06-03-2010 Thread Starter
Senior Member
 
QuickMick's Avatar
 
Join Date: Oct 2009
Location: California
Posts: 1,381
Thanks: 0
Thanked 3 Times in 3 Posts
Rep Power: 6
 
jb weld

After replacing the plate/gasket on my copper heat exchange unit i found there is still a leak on the copper by one of the fittings. Before i remove the thing again and attempt to braze it, i was considering attempting a fix on the seam using JB weld. anyone have experience with this? any luck?

thanks

How inappropriate to call this planet Earth when it is quite clearly Ocean ~ Arthur C. Clarke

Quinn McColly
Macgregor Venture
QuickMick is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 10 Old 06-03-2010
Senior Member
 
Join Date: Jul 2008
Location: chesapeake bay
Posts: 1,942
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
 
do it right, it wont take long, you might even be able to do on the motor if you can get to it
scottyt is offline  
Quote Quick Reply Share with Facebook
post #3 of 10 Old 06-03-2010
Senior Member
 
Join Date: Jan 2009
Location: Deer Harbor, Washington
Posts: 215
Thanks: 0
Thanked 9 Times in 9 Posts
Rep Power: 7
 
Hi Quick

I have fixed many things with JB weld over the years, Radiators , artwork, statues, block leaks, and I don't really remember it failing ever.

Mitch
mitchbrown is offline  
Quote Quick Reply Share with Facebook
post #4 of 10 Old 06-03-2010
Member
 
Join Date: Sep 2008
Posts: 94
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
 
I would go with Scotty's suggestion. Do it right. Take it out and get it cleaned and welded. There is metal (smoother non porous surface), heat and pressure. The JB Weld may not hold well.

Last edited by SeaFever2000; 06-03-2010 at 12:45 PM. Reason: Syntax
SeaFever2000 is offline  
Quote Quick Reply Share with Facebook
post #5 of 10 Old 06-03-2010
Member
 
Join Date: Feb 2009
Location: Kansas City
Posts: 51
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
 
After repairing the top tank of a radiator with JB Weld several times - I gave up and did the repair correctly with solder. Could have been "operator error", but for me, JB Weld is a temporary fix.

Sorry
Jurgy
Jurgy is offline  
Quote Quick Reply Share with Facebook
post #6 of 10 Old 06-03-2010
Senior Member
 
BarryL's Avatar
 
Join Date: Aug 2003
Location: Long Island, NY
Posts: 1,793
Thanks: 4
Thanked 43 Times in 38 Posts
Rep Power: 12
 
Hey,

IMHO JB Weld and the like are great for gluing things together and for repairing things that are broken. But they are poor at repairing things like holes and leaks that are under pressure.

For example, last year, right before a weekly cruise, I noticed that my water injection elbow on the engine exhaust was leaking. I could not get it properly repaired before my departure date. So it was either cancel the trip or effect a temporary repair. I first tried using epoxy / JB Weld to patch the leaks. That worked for 5 minutes until the pressure caused the JB Weld to get blown off the pipe. My second repair used a curved piece of metal and some hose clamps and a lot of JB weld. That repair lasted throughout my trip and allowed me to properly repaired when I returned.

In short, if you can support the JB weld with a clamp or something, it may work, if not, it wont.

Personally, I would remove the HX and take it to a radiator shop.

Barry

Barry Lenoble
Deep Blue C, 2002 C&C 110
Mt. Sinai, NY

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
BarryL is offline  
Quote Quick Reply Share with Facebook
post #7 of 10 Old 06-03-2010
Senior Member
 
Join Date: Jul 2008
Location: chesapeake bay
Posts: 1,942
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
 
if you can see the problem go find your local hvac guy, he has a torch and the silver to fix it on the boat. you would just need to drain the HX. even home depot sells brazing rod that will fix it, but the torch needs more heat than a propane or mapp will put out. you might get away with the oxy mapp setup that HD sells
scottyt is offline  
Quote Quick Reply Share with Facebook
post #8 of 10 Old 06-03-2010
Reward for lost Kraken!
 
hellosailor's Avatar
 
Join Date: Apr 2006
Posts: 11,449
Thanks: 5
Thanked 132 Times in 129 Posts
Rep Power: 11
   
There's a lot to be said for doing it right, but IF applied to a scrupulously cleaned surface, JBWeld can be the right solution for a long time, like 20+ years.

Heck, they seal pinholes in the cooling tubes on reactor systems with LOCTITE products, and that's considered "doing it right", so what's wrong with JBWeld? Assuming the surface you're applying it to is really clean, and it is mixed really well. And if it doesn't work...then you can take out the whole thing, hit it with a torch, and the JBWeld will come away anyhow.
hellosailor is offline  
Quote Quick Reply Share with Facebook
post #9 of 10 Old 06-04-2010
Senior Member
 
MARC2012's Avatar
 
Join Date: Mar 2008
Posts: 594
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 8
 
Jb weld,wd40,duct tape,won't leave home w/o them.marc
MARC2012 is offline  
Quote Quick Reply Share with Facebook
post #10 of 10 Old 06-04-2010
Senior Member
 
Join Date: Nov 2008
Location: Long Island
Posts: 2,136
Thanks: 4
Thanked 0 Times in 0 Posts
Rep Power: 7
 
What about rescue tape?
WanderingStar is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
aluminum boats? jbarros Boat Review and Purchase Forum 11 04-13-2010 03:12 PM
Cruising is... Long Island, Exumas Bahamas 3/14-4/1/10 skipgundlach Cruising & Liveaboard Forum 0 04-01-2010 10:05 PM
Butyl Tape - Did I find the right stuff? josrulz Gear & Maintenance 33 03-10-2010 08:10 PM
Ever repaired a stainless water tank? JVallely Gear & Maintenance 9 11-28-2009 11:51 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome