Today Ira shares how to make Poplar Bark strips for chair seat. I will return to his shop to film the weaving in the next video. Thanks for coming along with me for another chair seat adventure. 🪑🪑🪑🪑🪑🪑🪑🪑🌳🌳🌳🌳🌳🌳🌳🌳🌳🌳🌳🌳Trees have layers: Outer Bark, Inner Bark (phloem) Cambium cell layer, Sapwood, Heartwood & Pith💚.
🍃The Outer layer: protects the tree from injury and controls moisture by preventing excess moisture in rain and snow and retaining sufficient moisture during dry seasons. And it’s insulation in cold weather and sun burn protection in the summer. 
🍃Inner Bark Phloem: this layer is where food and nutrients pass through the tree. It has a very important job, but a very short lifespan, it eventually dies and turns into the outside bark layer of the tree.
🍃Cambium Cell layer: is the part of the tree trunk that grows each year. This layer produces more bark and wood as a reaction to the hormones being passed down from the leaves along the trees food pipeline. 
🍃Sapwood: this layer serves as the trees water pipeline, delivering water to the entire tree, as new sapwood is created the inner cells, lose their vigor and turn into heartwood. 
🍃Heartwood: found in the innermost part of the tree. It helps the tree to be balanced and stable. Technically heartwood is dead, but it does not atrophy or decay, unless the outer layers of bark are jeopardized. It’s made up of a hollow needle like cellulose fibers joined together by a glue like chemical called lignin.
🍃🍃Pith is at the very center, inside the Heartwood, it stores and transports nutrients throughout the tree. The medullary rays are cellular structures, found in only some tree species and appear perpendicular to the growth rings. The growth rings, also known as Dendrochronology appear one at a time, once per year, darker in the fall and lighter in the spring and summer. 
10 июн 2023
