I always wanted to make a couple of these chairs. I figured that the ipe would be the perfect wood. I found the plan in a magazine. The joints were sliding dovetails and tenons. I didn't think I could manage because the wood was so hard. I opted for dowels. Lots of them. I had to sharpen the drill bit after ever 20 holes. It's amazing how hard a wood can be. I seem to have a allergy to the dust, which is very fine and coats everything. Over all I am very happy with the results. I like working from a plan much better as I find it makes the work flow much better.