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Author Topic:   Epoxy question
Gep posted 07-07-2002 04:30 PM ET (US)   Profile for Gep   Send Email to Gep  
I was installing my transducer yesterday, and noticed water weeping out of the holes. I started drilling small holes in the bottom near the back, and got more water out. I've read old posts about injecting epoxy into the holes. What I was wondering was how you inject it into holes in the bottom of a boat. I had a hard enough time trying to get it into holes where I could just pour it and let gravity take over.
Any help would be appreciated.
Thanks, Mike
OutrageMan posted 07-07-2002 04:39 PM ET (US)     Profile for OutrageMan  Send Email to OutrageMan     
Use puttty epoxy. Available at any hardware store.


NWflyfisher posted 07-07-2002 07:21 PM ET (US)     Profile for NWflyfisher    
Dental irrigation syringe.
Jerry Townsend posted 07-07-2002 08:41 PM ET (US)     Profile for Jerry Townsend  Send Email to Jerry Townsend     
I use horse syringes - various sizes, relatively cheap and available at farm/ranch implement stores. ----- Jerry/Idaho
kingfish posted 07-07-2002 09:30 PM ET (US)     Profile for kingfish  Send Email to kingfish     
West System (found in West Marine catalog, and other places) sells plastic syringes made just for injecting epoxy for about $0.10 apiece, it seems like (maybe a little bit more). You cut the tapered tip off to get whatever diameter you want and throw it away when you are done. I usually clean them with acetone and get two or three uses out of them, being the cheapo that I am.


tobes posted 07-08-2002 09:10 AM ET (US)     Profile for tobes  Send Email to tobes     
Gep, Take a piece of duck tape to cover holes overlapping an inch or so, find and mark holes with marker, have second piece of tape on hand, then take west syringe with tip cut at sharp angle and inject through tape till hole fills, not too much. You will see tape bulge. Then cover with tape as you withdraw syringe.

Before you start,
If holes are still weeping, maybe put in a few more holes and put a heat lamp on them to dry them out

I've done this method more than I care to remember and it works well.

good luck,


Gep posted 07-08-2002 12:15 PM ET (US)     Profile for Gep  Send Email to Gep     
Thanks for the info guys, I think I have bigger problems though. In my infinite wisdom (I'm an idiot), after I drilled the holes I thought I would just take my compressor and blow some air in there to force the water out the other holes. Well it was working fine until I heard this rumbling sound, turns out I was delaminating the hull from the foam by doing this. I now have two sections where it delaminated the hull about 6" x 16". You can't tell by looking at it but I watched it happen so I know it's delaminated. I then decided to switch to a vacuum, I duct taped a clear 35mm film cannister onto the end of my wet/vac hose to see if I would get any more water out. I got a little more out. Now what do I do?
jimh posted 07-08-2002 12:50 PM ET (US)     Profile for jimh  Send Email to jimh     
Off the top of my head, I would suggest in the delaminated area you will drill an array of small holes, inject some epoxy into them, and thus rebond the foam to the laminate skin.

There may be other solutions, as I am sure follow up postings may reveal.

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