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  1. #1
    Join Date
    Sep 2018
    Location
    Qld
    Posts
    47

    Default Drying Musk Burl

    G'day Woodies,
    I have recently purchased two billets of Musk Burl 400 x 300 x 50mm thick & presently at 34% wet.
    My spare home room is chockers with Blackwood & other exotic billet part dry/wet all end waxed & slowly lowering the moisture content with medium fan & dehumidifier.
    The thing is, I have not tried drying Burl before, I believe its a tad finicky & will be a expensive loss if not properly farmed.
    Two suggestions so far were , use any house paint & fully coat & leave for x amount of time, The other suggestion was to bury billet deeply in saw dust,natural state & regularly check!
    I have heard the use of Polyethylene Glycol could be a good stabilizer, all be it expensive, may help??
    At present the end grain is coated in hot dipped wax.
    So I'm reaching out for all constructive reply......

    Cheers,
    Gary

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  3. #2
    Join Date
    Mar 2004
    Location
    Brisbane (western suburbs)
    Age
    77
    Posts
    12,117

    Default

    Hi Gary - you're not getting deluged with answers, so I'll donate my one tiny bit of experience with Musk burl. I had a piece about 100 x 75 by maybe 30mm thick, iirc. It came covered with wax all over. This doesn't seem logical to me 'cos in my view, you want to prevent rapid egress of moisture from end-grain while it diffuses (slowly) out across the grain in the rest of the piece. Of course with burl, it's usually pretty hard to decide where the "end grain" actually is, so many suppliers just dip the whole piece in wax or similar material. This slows drying to virtually nil if the coating is thick & relatively impervious, & gets the wood to you in one piece, but leaves you with the dilemma of how to proceed from there.

    Since I didn't want to wait forever before using the wood, I decided to scrape/plane some of the wax away from the areas that looked like they were more side-grain than end-grain. The wood was very 'wet' under the wax so I put it aside in a spot where I thought it wouldn't dry too quickly & left it for at least 18 months, (probably quite a bit longer, it was a long time back so can't remember the exact time). Well, it dried fine - the surfaces I'd planed became a little knobby from uneven shrinkage as you'd expect, but it remained sound with no evident cracking. From my limited experience with drying burls, it can be an unpredictable process, but softer woods like Musk tend to absorb drying stresses without failures better than hard, splitty woods, so as long as you take it easy you have a good chance of getting your wood dry in one piece.

    The greatest danger to any 'green' wood in my hands is my own impatience.....

    Cheers,
    IW

  4. #3
    Join Date
    Aug 2004
    Location
    Perth WA
    Posts
    2,035

    Default

    Experienced in removing the tree from the furniture

  5. #4
    Join Date
    Sep 2018
    Location
    Qld
    Posts
    47

    Default

    The greatest danger to any 'green' wood in my hands is my own impatience.....Whole heartedly agree Ian!, steady Eddie wins the race!

    A burl supplier from Indonesia suggested, too boil the billet in water which will release the gases from inner cellular structure, which speeds up the drying waiting game, but my gut feeling declined his offer.
    So I will endeavour too sticker both heavily end grain waxed billet & strap up tightly together, place then in a indirect fan location of drying room, then ugh, patiently twiddle my thumbs for next 2 years !

    Thanks for responding Ian, I'll report back When 12% dry achieved..... or not!

    Cheers,
    Gary

  6. #5
    Join Date
    Apr 2005
    Location
    Nerang Queensland
    Age
    66
    Posts
    10,766

    Default

    If it I tight grain I just leave it in a sheltered but ventilated area to dry. Burl has grain going in all directions, so there is no point sealing any of it, indeed being that wet you run the risk of it rotting if sealed.
    Neil
    ____________________________________________
    Every day presents an opportunity to learn something new

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