|
|
|
|
|||||
|
||||||
From: Bob Austin (no email)
Date: Sun May 15 2005 - 22:24:13 EDT
It is not only what type of epoxy, but how much support is given to the repair
and how well the surface is preped.
If I was just using an epoxy without any supporting material, I would use J B
weld. I damaged a support for a stanchion post support and could not weld it,
so I used JB weld. It is still functioning well 10 years later!
However for a water tank, which expands and contracts, as you fill the tank, I
would use a slightly different solution--or a combination of the two. I would
clean the surface with oxylic acid saturated solution, then sand it with 100
grit and finally clean with acetone after it was dry.
I would use a glass cloth as a supporting matrix. One way would be to patch
the actual crack with a thin amount of JB weld,sand it smooth, then put a good
6" surround of 6 oz glass put in place with West System epoxy. If there is
any question about the rest of the tank, cover all the entire tank with glass
cloth and epoxy.
Several experiences in the past: I had an aqual lift muffler develope pin
holes. I filled it with pebbles and rotated it for a number of hours to clean
the inside. Then soap and water, oxylic acid and finally acetone. I then
filled it with 2 cups of West Systems epoxy and tumbled it until the epoxy had
gone off. I also wraped the outside with glass cloth and epoxy.
Another involved a gas tank in an open boat. I cleaned it inside and
out--then did the pebble trick. Next covered with two layers of glass and
epoxy, finally put about a quart of epoxy on the inside and tumbled it. This
repair was still good 10 years later.
The JB weld alone will probably do the trick--but adding the cloth would
definately prevent any spreading of the crack.
Bob Austin
_______________________________________________
http://lists.samurai.com/mailman/listinfo/trawlers-and-trawlering
To unsubscribe send email to
with the word
UNSUBSCRIBE and nothing else in the subject or body of the message.
Trawlers & Trawlering and T&T are trademarks of Water World
Productions. Unauthorized use is prohibited.
|