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Thread: beeswax/ rosin filler

  1. #36
    Join Date
    Jan 2000
    Location
    Cushing, Maine
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    3,435

    Default Re: beeswax/ rosin filler

    Quote Originally Posted by Thad View Post
    Not my experience. George Kirby (where I got my pitch) said to add bees wax to make it less brittle.
    That may well be the case; there is some brit stuff that is made for deck seams that could well have some wax in it. Last pitch i used was in a bilge and it got pretty hard. The beeswax /rosin mixture can be planed and will show the mark of a pressed finger nail.
    Ben Fuller
    Ran Tan, Liten Kuhling, Tipsy, Tippy, Josef W., Merry Mouth, Imp, Macavity, Look Far, Flash and a quiver of other 'yaks.
    "Bound fast is boatless man."

  2. #37
    Join Date
    Jul 2011
    Location
    Lindstrom, MN
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    2,279

    Default Re: beeswax/ rosin filler

    The distinction between rosin, pitch and resin was bothering me as I read through this and some other references. The process for making rosin was distilling off the turpentine from pitch, and the information on pitch seemed to involve cooking resins to produce a hard brittle gum or pitch. So what is the difference?

    According to wikidiff.com, "The difference between rosin and resin is that rosin is (organic chemistry) a solid form of resin, obtained from liquid resin by vaporizing its volatile components while resin is a viscous hydrocarbon secretion of many plants, particularly coniferous trees."

    In a birch bark canoe building demo I watched several years ago, the builder was applying pitch softened with bear grease to the seams. Too little bear grease is brittle and too much will melt in the sun. From several birch bark canoe sites, I gather that tallow and other greases have been used and they also add charcoal, making it black and stiffer(?).
    http://www.barkcanoe.com/techtips25B.htm
    http://www.northwestjournal.ca/VIII4.htm
    https://beaverbarkcanoes.wordpress.c...ki-bark-canoe/ For warm weather soften with tallow and in cold weather beaver oil.
    Management is the art of counting beans. Leadership is the art of making every being count. --Joe Finch

  3. #38
    Join Date
    Aug 2009
    Location
    Olympia, WA, USA
    Posts
    2,251

    Default Re: beeswax/ rosin filler

    Not my experience. George Kirby (where I got my pitch) said to add bees wax to make it less brittle.
    Amen. I used a lot of beeswax in the pitch I used behind Bucephalus's garboards, replacing the original stuff that had dried out, broken loose, and made mischief. The wax made all the difference --even though I eventually abandoned the entire practice.

    Alex

  4. #39
    Join Date
    Feb 2006
    Location
    Lenox, MA/Vineyard Haven, MA
    Posts
    901

    Default Re: beeswax/ rosin filler

    re-resurrecting an ancient post...

    I finally got around to trying the rosin/beeswax brew between my floor cracks. I melted the beeswax and rosin in a pot, about 50/50 for a nice tone that was pretty close to the original heart pine, taped off the cracks and tilted some of the stuff in. Over and over again, while I watched the level drop to the bottom of the crack. Problem is, though the mix seems like the perfect stuff when it sets--pliable but relatively hard--it seeps right through the bottom of the cracks and I end up with a nearly empty crack. I'm trying to think of something that could seal the crack ahead of time that isn't quite so watery. Maybe melted roofing tar or driveway sealer? Of course either of those would be horribly messy and would require some seriously meticulous application. I don't want to use thickened epoxy because, one, even that flows like crazy (at least WEST) does and two, that would be the wrong thing to do with planks that no doubt expand and contract. Maybe put a tube of Alex caulk in a pot of nearly boiling water, see if it sort of flows when it comes out, barely cut the tip so I get it only in the bottom of the crack...l

  5. #40
    Join Date
    Jun 2003
    Location
    Central Coast, Ca
    Posts
    21,663

    Default Re: beeswax/ rosin filler

    How about rolling in a strand of cotton? Dark colored cotton maybe.

  6. #41
    Join Date
    Feb 2006
    Location
    Lenox, MA/Vineyard Haven, MA
    Posts
    901

    Default Re: beeswax/ rosin filler

    I've decided to give up on the rosin/beeswax idea and just a brown Sikaflex of some sort--there seem to be several Sikas (i used to use it all the time in the 80s but there was only one type then, I think) so now it's just a matter of figuring out which one

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