Reply by Waldschrat

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Posted on white oak verses red oak

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505 posts in 3460 days

#1 posted 07-21-2011 06:47 PM


Hey man no problems, I am just a stickler for detail and proper terms and uses, that what made this thread stick out in the first place.

Well allow me to Retort:

Check out what I wrote

What I originally said In addition to the Tannic acid… as a wood preservative (a great preservative by the way), Tyloses! The Plugging of the Parenchym cells … Well that’s exactly what I said… more or less… or tried to anyway! Although the proper term was lost to me at the time I wrote that post.

Tyloses is probably the English word for “vertylt”! I am mostly using these terms in German, so sometimes I forget the english ones.

So If you understand what Tyloses is/are then you know why I spoke up. Tyloses are not any sort of membrane. They are the things that are end up plugging the Parenchym cells. I took the liberty of posting this article here written in english: Very well explained from Wiki.

Tyloses are outgrowths on parenchyma cells of xylem vessels (vascular tissue used for water and mineral transport throughout a plant). When the plant is introduced to a stress like drought or infection, tyloses will fall from the sides of the cells and “dam” up the vascular tissue to prevent further damage to the plant.

Tyloses can aid in the process of making sapwood into heartwood in some hardwood trees, especially in trees with larger vessels.[1] These blockages can be used in addition to gum plugs as soon as vessels become filled with air bubbles, and they help to form a stronger heartwood by slowing the progress of rot

Thats more or less what I tried (obviously not that clearly) to describe. Not to mention as I originally stated the tannic acid in the wood helps to keep fungus at bay.

Not to mention, as well, the pores on oak (vascular pores) that one is able to see with out even a microscope are not necessarily plugged. In fact you can even blow into the endgrain of chunck of oak, if the grain is just right you can feel the air a couple inches away. (But this is something I have tried with Oak over here so this is kind of out of the scope of White oak).

No hard feelings just wanted to the facts to be out there. And you are right oak is not the easiest wood to dry… next to maple, it can be down right difficult especially in artificial drying or kiln drying.

-- Nicholas, Cabinet/Furniture Maker, Blue Hill, Maine

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