How to fix "oil canning"???
Posted by: waterbug on Jun-05-08 12:38 PM (EST) Category: Kayaks
I looked at a nice plastic Eclipse....about 9 years old...
It was stored on its side (good...) but it has dents in the hull where it was tied into a stacker bar. I have heard this referred to as "oil canning"...
How does one get the dents out? Any ideas would be appreciated....
4-place Boat Trailer
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Dents are Dents...|
Posted by: grayhawk on Jun-05-08 1:16 PM (EST)
"Oil Canning" is different.
Greyak is Right|
Posted by: old_user on Jun-05-08 1:55 PM (EST)
That is not oil canning.
Posted by: Jeffrey_Lee on Jun-05-08 2:06 PM (EST)
What grayhawk is so tersely saying is that the term oilcanning is often (mis?)used to mean permanent dents in a boat, which are in fact simply dents.
Paddle the dents out.|
Posted by: string on Jun-05-08 2:24 PM (EST)
had one with significant dents|
Posted by: Brazilbrasil on Jun-05-08 2:34 PM (EST)
Careful with the heat|
Posted by: booztalkin on Jun-05-08 4:20 PM (EST)
My experience trying to reshape a hull with heat was not so successful. It is very difficult to control the heating so that the area you want reshaped heats evenly, and the properties of the material make it sort of all or nothing. If it doesn't get hot enough, no result. Too hot, the material becomes way too stretchy. Also, if there are imperfections in the hull, under heat that area will behave differently than the surrounding areas. The parts of the hull that get hot, and that you don't want to change, may obey the law of gravity and sag.
maybe I am just not aggressive enough|
Posted by: Brazilbrasil on Jun-06-08 12:30 PM (EST)
with the temperature as I have had to do this a couple of times and I find that that area is very easily bent back into its original "memory" of being dented. A quick stretch with that stretching clamp and it is back in shape. Perhaps I shoudl have gone up in temperature just a bit more and then tried cooling it more rapidly (bucket of ice water maybe?) to get it to forget the old memory and stay with the new?
Posted by: old_user on Jun-06-08 1:45 PM (EST)
I have an older rotomolded sea kayak that occasionally gets dents in it from being on the roof racks. To fix the dents, I put the kayak on the ground, on top of a brick at either end so that the middle is off the ground by an inch or two. Then in the middle, where the dents are, I put bricks inside the kayak, on top of the dents. Then I leave the boat in the sun, after a few warm days the dents are gone. They come back as soon as the boat is left on the roof racks in the hot sun too long, but they come out each time I use the bricks. The engineers and scientists can tell me if I'm doing any sort of weird damage to the boat by doing this every few months, but for me the bottom line is that the dents come out and the boat still floats and that's all I care about. :) :) :)