Shannon's Lumber Industry Update

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Episode 43 – Riving Wood

12.21.2020 by shannon // 2 Comments

Shannon's Lumber Industry Update · 43 – Riving Wood

Riving wood Capitalizes on Weakness

Today I talk about riving wood. Why do it, what species to consider and when to use a wedge and when to use a froe. Then I talk about the falling prices of Cherry, Buying CITES species, drying turned bowls, and why small sawmills seem to only sell slabs.

Riven or split wood can be very straight and strong.  Given the correct species that is.  Many will say that not all wood species can be split and this is most likely what they are referring to.  Personally I think you can split any wood, but some species will do so unpredictably.  More like fracturing a bit of quartz or flint than splitting.  Still with a wedge and a sledgehammer you can split just about any species.  What really distinguishes riven wood is the end result or usage.  We rive wood because it is way faster than trying to saw an entire log.  Once you get down to smaller pieces we continue to rive because the process capitalizes on the weakness inherent in the structure of wood.  The wood splits along the pores between the growth rings leaving very straight grain and a single growth ring visible on the face of the piece.  This lack of grain runout means a very strong, flexible piece perfect for applications with dynamic load.  This is why riven wood makes great spindles in Windsor chairs.  You can shape them impossibly thin and delicate and yet they are super strong.  They also flex without breaking to give the feel of the chair even more comfort.  

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Comments

  1. Chris says

    January 11, 2021 at 9:43 pm

    Hi Shannon, you mentioned issues related to the export of “old stock” CITES listed lumber that would otherwise be grandfathered within the US. I have heard a few stories of people having their auction-bought vintage planes seized at the border because they have Rosewood knobs and totes. Is this really a thing? It’s a finished good (antique) so are there any legal grounds for this to happen? Would it apply to antique furniture made from CITES listed species as well?

    Reply
    • shannon says

      January 16, 2021 at 11:27 pm

      This is a murky area but I would assume that it will be a problem and seek out a “CITES passport” for the furniture or whatever. This is a common issue in the music world where many Violins are made from CITES species currently. A lot of guitars encounter this as well and with musicians traveling a lot for concerts and crossing borders the CITES passport was developed for this purpose.

      Reply

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