I really like making these chairs, a nice little project you can usually do in a afternoon of pottering around the workshop. The hardest thing is to find the timber in the first place as its fairly wide and that can mean expense. What ive been using is rough cuts that the local drunken hillbilly woodsman (no offence, it takes one to know one) produces as he staggers around his sawmill. I can usually pick up a few boards for beer money which for locally grown timber from a source is not to be sniffed at. The timber is fresh though and will need laying up a while in a dry place to dry evenly, this stuff can warp something chronic if bought into a modern house with its dry enviroment.
You dont need major ammounts of tooling, a jigsaw and a drill, sander is pretty much all you need.
Origins of the chair are shrouded in gobbledegook, one recent piece i read that seemed well written suggested Africa as a source for this type of chair.
Anyone else make these? Im also thinking about selling them, 3 people have asked me for this one, i just laughed, one was my wife