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Thread: two part epoxy over tung oil

  1. #1
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    two part epoxy over tung oil

    Hi guys,

    So i'm working with some walnut and 100% tung oil. I'm on my 2nd coat and really love the look of it when it has a nice film of oil before it's wiped and dried. I was wondering if you can finish over tung oil with 2 part epoxy as it gives the look i'm looking for. I understand that the oil needs to breath to cure. I was wondering if anyone has every tried it and how long should I wait after the last coat to apply the epoxy?

    Note that i live in canada and we started running the furnace so its really dry in my house
    Last edited by Mike Frencel; 09-24-2013 at 03:51 AM.

  2. #2
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    I'd wait at least a month before top-coating with anything. Then, I'd start with a couple sealing coats of shellac, and let them cure for several days before putting anything else on it.

    I wouldn't use the epoxy, mainly because it's so hard to repair. Instead, I'd use something like Behlen's "Rock Hard" finish, or a varnish.
    Jim D.
    Adapt, Improvise, Overcome!

  3. #3
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    another NO vote for the two part epoxy now, after using the tung oil.. adhesion troubles for sure.. that epoxy is better used as a stand alone finish rather than a top coat.. i also suggest the Behlen's "Rock Hard" finish.
    If in Doubt, Build it Stout!
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  4. #4
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    Quote Originally Posted by Jim DeLaney View Post
    I'd wait at least a month before top-coating with anything. Then, I'd start with a couple sealing coats of shellac, and let them cure for several days before putting anything else on it.

    I wouldn't use the epoxy, mainly because it's so hard to repair. Instead, I'd use something like Behlen's "Rock Hard" finish, or a varnish.
    Will Behlen's give me a similar looking finish? I watched some videos that say you can use a sanding sealer once the oil is cured and put whatever you want overtop the sealer after you sand it smooth.

    Also the Behlen's, what is the best way to apply it if you don;t have a spray gun?

  5. #5
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    Quote Originally Posted by Mike Frencel View Post
    Will Behlen's give me a similar looking finish? I watched some videos that say you can use a sanding sealer once the oil is cured and put whatever you want overtop the sealer after you sand it smooth.

    Also the Behlen's, what is the best way to apply it if you don;t have a spray gun?
    The Behlen's will give a nice, deep-looking gloss finish when multiple coats are applied. Sand (or maroon Scotchbrite) the finish between coats, and apply maybe a coat a day for five days. Brushing is fine. That's the only way I've ever applied it. If you want less gloss, you can rub it down with scotchbrite, then wax it.
    Jim D.
    Adapt, Improvise, Overcome!

  6. #6
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    Quote Originally Posted by Jim DeLaney View Post
    I'd wait at least a month before top-coating with anything. Then, I'd start with a couple sealing coats of shellac, and let them cure for several days before putting anything else on it...
    Seconded. At least a month, if not more. Also, you want to make sure it's dewaxed shellac.
    When the going gets weird, the weird turn pro. - Hunter S. Thompson
    When the weird get going, they start their own forum. - Vaughn McMillan

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  7. #7
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    Quote Originally Posted by Vaughn McMillan View Post
    Seconded. At least a month, if not more. Also, you want to make sure it's dewaxed shellac.
    Can you recommend a shellack product that i could buy at lee valley?

  8. #8
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    Mike Lee Valley offers raw shellac flakes that you would have to dissolve and make up your own. What most do is to buy Zinsser shellac available at home depot just make sure to get the dewaxed one as Vaughn has pointed out. Check that the tin actually has this mentioned on it.
    cheers

  9. #9
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    Zinsser is the primary vendor of pre-mixed shellac. They changed the name of their 2 pound cut dewaxed shellac to remove the name shellac, perhaps so only those with the secret password would know what it is and what to buy.



    If you want a 1 pound cut (for the first sealer coat, perhaps) mix 50/50 with denatured alcohol. If you want a heavier (final) coat, use out of the can. The brush will be near impossible to clean, but next time you need a shellac brush, put the hardened brush in shellac, and it will resoften for use.
    Last edited by Charlie Plesums; 09-25-2013 at 03:16 PM. Reason: correct spelling of Zinsser
    Charlie Plesums, Austin Texas
    (Retired early to become a custom furnituremaker)
    Lots of my free advice at www.solowoodworker.com

  10. #10
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    Re: two part epoxy over tung oil

    Charlie any chance you can fix your image so the secret gets revealed.

    Sent from my MB860 using Tapatalk 2
    cheers

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