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Re: lv-ab: resinated sand core?

From: Steve Smith (no email)
Date: Sun Apr 01 2001 - 00:02:08 EST

  • Next message: Bob Johnson: "RE: lv-ab: resinated sand core?"

    This is amazing. I have been serving customers mesing about with boats for
    thirty years and have never heard of such a thing. Would it not be very
    dense, a compromise between a solid GRP hull and a ferrocement? I assume you
    cannot drill a hole in it without a carbide drill bit......?

    There is something called "foundry sand" which is sand coated with a resin and
    then heated to fuse the sand grains together. It was used for making flower
    pots thirty years ago because it allowed air to pass, being porous, but not
    liquid water. Unfortunately, the resin broke down from the long-term moisture
    and/or bacterial/fungal exposure, and the pots all leaked after a few
    years.......

    Russell wrote:

    > Hello all,
    >
    > A fiberglass boat I am looking at apparently has a "resinated sand" cored
    > hull, has anyone ever heard of this before? I certainly have not. If anyone
    > has, could someone tell me pros/cons of it? I would imagine it would add a
    > good deal of strength to the hull, but would it absorb moisture and
    > delaminate badly the way wood cored glass boats would? I would think if
    > this core was a good thing you might see it in common use?
    >
    > If it helps, this is on a 1980 swedish built boat.
    >
    > Russell
    >
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  • Next message: Bob Johnson: "RE: lv-ab: resinated sand core?"



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