Flotsam

The chair is just about up together, so another object has emerged from the flotsam. I am still debating whether to add some kind of concealing element to the cylinder strut, perhaps some kind of wooden cap structure to make it a little less utilitarian and straight.

Some of the structural elements surprised in a moment of detachment. The three long nuts welded to the base plate are engaged by three allen head bolts countersunk in from below the seat. The backrest has threaded inserts that are engaged by four Allen head bolts just visible in amongst the tracery. The base plate is recessed slightly into the seat.

The nature of Zelkova grain causes intertwining as the tree grows and as I may have mentioned it is often easier to try and chop the wood at a tangent than try to chop it across the diameter. This also makes it a bugger to plane properly as grain goes every which way. The survival of the backrest depends on this strength in the wood as it is basically an arc from the outer rim of a disc cut from the trunk of a tree. In this case the tree had suffered some problem leaving it hollow, so the arc shape was already suggested and several chairs I made back in 2008 (from march if the archives are of interest) from the same trunk are still going strong, so I have high hopes.