Walnut steaming

Discussion in 'Processing' started by rob3232, Mar 31, 2020.

  1. rob3232

    rob3232 Member Full Member Thread Starter

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    Here are some pictures of the steamer at work. I really do not know all of the specifics but there is a large vat of water that is heated producing steam into the aluminum building. The temperature of the wood is brought up to 200 degrees and held for at least 24 hours.

    Pictures of building and vessel that holds water and tubing to heat water. We run a large boiler just to provide heat for running two of these steamers.

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    More pictures to come. Please bare with me and ask questions if you like. I’ll try to get answers for you as this is not what I do at work but want to share.
     
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    Last edited by a moderator: Mar 31, 2020
  2. rob3232

    rob3232 Member Full Member Thread Starter

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    Filling up the steamer. Notice lumber is dead stacked not on sticks like in a kiln. 54BAADBC-B5BD-4FFE-A788-04931EB7157D.jpeg
     
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    Last edited by a moderator: Mar 31, 2020
  3. rob3232

    rob3232 Member Full Member Thread Starter

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    Before steaming.

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  4. rob3232

    rob3232 Member Full Member Thread Starter

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    After steaming.

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  5. rob3232

    rob3232 Member Full Member Thread Starter

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    Stickered and ready for kiln drying.

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    Thanks for looking.

    Rob
     
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  6. Mike1950

    Mike1950 Founding Member Founding Member Full Member

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    Do you burn scrap to fire boilers? Thanks for pics.
     
  7. rob3232

    rob3232 Member Full Member Thread Starter

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    Yes, this boiler burns green wood from the mill. We have another boiler that burns dry wood that provides heat for the kilns and keeps warehouses warm.
     
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  8. gman2431

    gman2431 Member Full Member

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    Why flat stacked at first? No warping when steamed?
     
  9. rob3232

    rob3232 Member Full Member Thread Starter

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    Yes. And I think the high temperatures would really hurt the wood. Great question. I am not an expert on this process but appreciate your question!
     
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  10. djg

    djg Member Full Member

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    That's all Bk Walnut? Wow! And it's steamed to color/stain the sapwood?
     
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  11. woodtickgreg

    woodtickgreg scroll, flat, spin Staff Member Global Moderator Founding Member Full Member Forum Moderator

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    I have always thought walnut sapwood was as hard as the heartwood when working it. But I have only used air dried walnut in my projects.
     
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  12. DKMD

    DKMD Sawbones Staff Member Administrator Global Moderator Full Member

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    That’s cool, Rob. Thanks for sharing!
     
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  13. rob3232

    rob3232 Member Full Member Thread Starter

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    Pretty much. Some say it also creates a more uniform color in the heartwood. Although many people do not like the change in heartwood color. I’m trying to avoid this thread from becoming a thread about people’s personal preference. My intention is share what is involved in processing most Walnut by larger suppliers.
     
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  14. djg

    djg Member Full Member

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    Without looking the history up, I'm assuming the steaming process was implemented mainly to increase the BF of a log by including sapwood.
     
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  15. Nature Man

    Nature Man Member Full Member

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    That's a serious operation! Not just for a hobbyist! Chuck
     
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  16. Bigg081

    Bigg081 Connoisseur of Man Glitter Full Member

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    Few questions:
    1. Where is the place located?
    2. Can we pay someone to turn off the security cameras?
    3. Will you help me load up a U-Haul?
    4. How much do I need to pay to keep everyone from snitchin?!?!?!
    Walnut is my FAVORITE!!! No secret here, of course. I could swim in walnut shavings and sawdust!
     
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  17. Graybeard

    Graybeard Member Full Member

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    Thanks Rob. Really interesting.
     
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  18. JR Parks

    JR Parks Member Full Member

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    Thanks for sharing Rob. I always wondered how it was done. Knew the why.
     
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