Welcome! Need support, you got it. Or share you ideas and experiences.
i have a 14' aluminum jon boat. i just bought it and the drain plug is in the bottom of the boat in the back. well it busted and there is a hole about the size of a half dollar. how could i fix this without welding it? i would like to patch it and make a hole in the back like a normal boat. any suggestions would be greatly appreciated. thanks
Once upon a time, I extended the sides of a 8' Jon boat up and in to make it less likely to swamp. I used wire screen, riveted to the gunnels and covered it with fiberglass cloth and glass epoxy. I sanded a strip of paint off of the aluminum hull and let the epoxy contact the hull just below the original gunnel. I was surprised at how well the glass epoxy bonded to the aluminum.
Though I've not ever patched a hole in aluminum with fiberglass, I believe it would work. If you can find a small piece of aluminum near the same gauge as your hull, cover the hole from the inside with aluminum, using pop-rivets, then coat both sides (after sanding to bare aluminum) with fiberglass cloth and glass epoxy, repaint and be on your way.
Iwould measure the hole in diameter. then I would go down to my local plumbing parts or home builders mart and get the appropriate size short plastic pipe nipple.about 2 inches long it will be threaded on the inside on one end and the other side will have threads on the outside. get a pipe nut and 2or3 rubber washers.and a screw in plug. Trim the hole to fit with a cheap hole saw or shears to just get the nipple to go thru the hole snugly. Place about 2 washers on each side. screw the nut on and screw the plug in and test for water tightness. It won't be pretty, but it should work. If you need to fix a really ragged hole, welding is about the only real answer. Goodluck, TG.
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