sealing plywood tank

  • We are currently upgrading MFK. thanks! -neo
jkempel24;1025960; said:
the cabinet building and the plumbing IMO is the easy part (if your an avid woodworker such as myself) aleast you are actually doing something that gives you a feeling of accomplishment. having to do several coats of epoxy and then more or less watch it dry and then cure is the part i dont like. Thats why i figured with the spay in type it would only be one coat and your done.
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OK, well my point is it doesnt' really matter what product you use, it's still going to take a few days to cure... nevermind the silicone curing process that will also take a few days. Just plan your project out so that you have other stuff to set up and build while the epoxy cures. The thing isn't going to get built in a day no matter how you do it.
 
The silicone was for the glass. It leaked a small amout no matter how much silicone I used. I ended up removing the glass and the silicone just peeled right off the herculiner liner. I ended up with 2 coats of rinoliner and 6 coats of epoxy. Hasn't leaked a drop. Good luck.
Guinness
 
I've been looking into the process of avoiding the need to use expoxy myself.

The method I've selected for testing is to build the tank out of ply as usual but veneer the sheets (on the inside of course) with a very thin (read cheap) sheet of rigid polycarbonate.

Low modulus pure silicon sticks to polycarbonate (unlike acrylic) AND glass pretty well so I should have no problem sealing the whole thing.

I am making a smaller test tank first to see how it works; I'll post the results.
 
aropal;1026315; said:
I've been looking into the process of avoiding the need to use expoxy myself.

The method I've selected for testing is to build the tank out of ply as usual but veneer the sheets (on the inside of course) with a very thin (read cheap) sheet of rigid polycarbonate.

Low modulus pure silicon sticks to polycarbonate (unlike acrylic) AND glass pretty well so I should have no problem sealing the whole thing.

I am making a smaller test tank first to see how it works; I'll post the results.
Click to expand...

I don't have a link, but if you do some searching you might find a thread about a guy building a monster tank out of plywood and lining it with thin sheets of ABS. Same Idea.

If I ever build another non-glass tank, it will probably be very large and I'm thinking concrete. I would use either pond seal epoxy or polyester. The nice thing about polyester ebing that you can spray it for a nice finish (not to mention, it's much cheaper than epoxy, and can be chemically modified not to break down under UV.
 
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