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Concrete hardener apply on wood?

Discussion in 'Luthier's Corner' started by bread903, Oct 11, 2013.

  1. Hi.

    I started making guitars and basses myself,

    but the problem is that I'm Korean and I live in Korea

    where there's not a really wood worker's heaven.

    I couldn't even find a wood store that deals birdseye maple.

    Anyway, I bought some Buckeye burl from overseas

    and I thought I would be able to get Minwax wood hardener

    to stabilize it, but there's no company where deals that.

    Not even other wood hardeners from other companies.

    But while I was google researching, I found out that

    the concrete hardener is commonly used in the construction

    site in Korea.

    You know, to harden the floor for the heavy vehicles

    wouldn't damage it.

    Then I thought, it must be just another chemical to

    soak into the small holes in the concrete and gets hardened

    overtime, it might work on wood!

    But I don't want to ruin 100 dollars pieces of wood

    to see if it works.

    Is there anyone who tried this? Concrete hardener on wood?
  2. davens


    Jan 24, 2005
    Stoney Creek, ON
    I've never used Concrete Hardener, but I have used epoxy thinned with methyl hydrate with good results. I've heard other people use Cyanoacrylate (super glue).
  3. But isn't super glue too expensive to stabilize the wood size of a guitar body?

    I'm not talking about making a pen, you know.
  4. davens


    Jan 24, 2005
    Stoney Creek, ON
    It could be pretty expensive; I'm not sure how much CA it would take. I've only ever used it for cracks. The thinned epoxy route is certainly not very expensive. FYI, in my case I stabilized after having glued the top (spalted maple / burl maple) to the body core.
    Some relevant reading:
  5. Rebop


    Jul 9, 2008
    La Honda, CA
    Thinned epoxy is what Ken Parker uses on his archtops and those have some of the finest feeling and looking finishes I've ever laid my hands on. I would go that route.
  6. Neek


    Nov 26, 2008
    South Florida
    From what I understand, concrete hardeners chemically react with the materials in the concrete to increase its density, which is why they are often called "densifiers" instead of hardeners.I don't think it's as simple as just adding an epoxy to the concrete to make it harder (as one might do with wood). I'm not sure which chemicals interact with what in the concrete, but I don't think they would interact the same way with wood. Do the construction sites around you use them to harden wooden floors, or concrete floors?
  7. A densifier and a hardener are two different things. A hardener will help the concrete cure faster and a densifier will increase the density of the concrete by removing entrapped air. Neither will work on wood.

  8. Thanks for all you people's input.

    So concrete hardener is no good for wood. Got it.

    I should start looking for epoxy.. There are 2 liquid mixing and just 1 liquid type..


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