I've decided on a configuration for the back rest of the Heavy Chair. My original thought was to keep it simple and shape it out of one piece of wood. Simplicity occasionally has its complications.
The wood grain that runs top to bottom on my chair would create a weak spot at the point where the seat back leaves the seat support, and it will eventually fail and begin to crack. By using a sliding dove tail joint and turning the grain of the seat back perpendicular to the seat support the weak point is eliminated. It could then expand and contract without compromising the joint.
I'll use a wooden dowel to keep one end to the joint static and let the opposing side travel freely. No glue will be used in the joint except to secure the wooden dowel.
I'm still considering the species of wood for the seat back assembly. I'd like to use something other than walnut as it find its way into most of my projects. You'll know as soon as I decide.
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