I go along with Jimi on this. I repaired an aluminum boat about five years ago 
with JB weld. I have since sold it but as far as I know it is still doing fine.
Tony



On Monday, January 13, 2014 9:03 AM, "Jimi, AKA Desert Eagle" <j...@hdc-nm.com> 
wrote:
  
 
Morning Chuck, and all. Big tip, never use auto 
store or auto anything fiberglass and resin to try to fix an aluminum boat. 
Common mistake and recommended all the time, but you see the results yourself. 
For patching any seam leakage or holes up to 1/2" buy the JB weld in a set. It 
has parts A and B, mix equal amounts by eye, (not absolutely critical to have 
exactly 50 50 mix). You can get it at any auto parts store, note, don't get the 
small 1 oz tube kit, get the professional 5 oz kit. As long as it is closed it 
lasts for years, (I have some over 30 years old that works 
perfectly. 
  
Nor the repair. sand the area to be patch with fine 
sandpaper or emery cloth, both sides, (in and outside). Us acetone to clean the 
area in and out. Use the ice lolly stick you used to mix it with to place a 
blob 
on the hole. If it is small, (pin hole to about 16th inch no real backing is 
needed), press the blob a bit till it oozes thru. Take another small blob and 
put on the other side from where you started. Take a stip of clear packing tape 
and place it centered over the patch and gently press so the JB spreads out a 
bit and then smooth to a genital 1/16 to 1/8th" high in the center out patch. 
Repeat on the other side. Let cure overnight and go fishing. 
  
Now, for holes 1/8" and larger, same process, (sand 
clean etc.), but we add something, your pop can. Take the empty pop can you 
have 
been enjoying while cleaning the area and snip it open with your scissors, 
(note, using the same scissors you normally use for trimming hackle is not 
recommended, it will give your Royal Coachman a bad hair day...). Trim the 
aluminum from the can to a patch that will overlap the hole by a minimum of 4 
times the hole size for holes up to half inch. Over that have the overlap about 
3/8ths to half inch all the way around. Note, the inside of the can is coated 
so 
you need to sand and clean it with acetone till it is bright aluminum and you 
and see the sanding marks in it. Again, mix your JB and coat the hull and the 
patch and place. Press it into place and tape as before, repeat with a second 
patch on the inside, or outside if you started on the inside. If you put enough 
JB on the inside it should spread around the edges enough to make a nice clean 
patch suitable for bare feet. 
  
Now, the big question, did all that make 
sense? 
Jimi
Desert Eagle Shooters
Rifle Marksmanship Instructor
Long 
Range Precision Rifle Instructor
 
----- Original Message ----- 
From: Chuck Alexander  
To: fly fishing for 
panfish ; vfb-mail@googlegroups.com  
Sent: Monday, January 13, 2014 3:18 AM 
Subject: [VFB] Repairing my boat's tiny cracks, and 
pinholes 
 
Folks: My old jon boat is probably older than me (see attached pics), but I 
had it looking pretty decent in these pics after I painted it, and put 
fiberglass in the bottom outside and the bottom inside as well. But, that 
regular fiberglass resin, the type that is clear, when you walk through the 
boat, as in getting in or out of the boat, that stuff cracks pretty easily. 
They 
make a “Bondo” type fiberglass that is an opaque  and green in color. Does 
anybody here know if that “Bondo type” does a better job on things like this 
than the traditional clear resin, used WITH fiberglass  cloth as well. I 
will also use the cloth with the Bondo type if that is what I end up going 
with. 
And help though, no matter what it is, as far as fixing cracks, or pinholes in 
the bottom of an aluminum jon boat would be greatly appreciated, cause I sit up 
front, and run that foot controlled trolling motor, while my wife had a regular 
trolling motor with her, and so when we are ready to go a cpl MILES to the end 
of the other end of the lake, or if it comes up a thunderstorm, we crank BOTH 
trolling motors up on HIGH and a Half LOL, and high tail it to the boat ramp. 
Thanks a lot. I wish I still had my welding torches and tanks. I would just get 
aluminum brazing rods and braze the cracks and holes. My wife has the sump pump 
in back of the boat, and she says she’s tired of running that thing all the 
time, when she could be FISHING instead LOL..And we all know what happens when 
momma ain’t happy..., 
Chuck
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