It can range from smooth, highly-finished pieces to very rustic ones that retain the bark of the original tree. Sometimes, entire sections of a tree are used, as in the support column in the photo, below. It cuts a very nice flat end tenon from 3/4″ to 6″ in diameter, and up to 6″ long without moving the cutting head. I kinda wish there was a bit more exploration of working with greenwood and with conifer wood. You get the impression that this is what these guys have been doing for ten years, cranking out log furniture. They do a good job of cutting the tenons, drilling the holes, knocking it all together … My favorite part is where they hide some dowels and they say that this is to make this into a generational piece. The heavy use of these teeny tiny nails did make me think that this path does have some strong merits. In fact, on one of his pieces, you kinda get the impression that it was the first time he ever made anything like that.
Perhaps someone with experience of making roundwood furniture could pass on their experience in picking branches/small stems that will provide sufficient structural strength for tables and chairs.
Roundwood furniture tenon
As the name implies, it features a lot of wood that is left rounded, as opposed to being planed into flat boards. Depending on the methods of manufacture, roundwood furniture can be very sturdy and durable.
Construction techniques vary widely, but mortise and tenon joints are often favored for joining pieces.
Roundwood architectural features are also used on much larger scales, as all or part of the design of a house or other building, as shown for the railing in the photo below. I used a dollar store razor knife to carve a bevel from 3 or 4 inches back from the tenon ( the dowel part ). I watch it and think that my whole life is silly and should do what this guy does: go for a walk in the woods … He talks about harvesting the wood in late spring so you can easily peel off the bark – thus leaving behind a rather perfect stick. They have a mountain of sticks piled up out back and for each piece they go grab some sticks.
Overall, they make building a chair from conifer wood look easy and at the end of the video they showcase a bunch of other stuff they have built. I would be very curious about expanding on a technique that used zero glue, but lots of these nearly invisible nails.
From some slower-growing species, a branch may have a reasonable amount of heartwood as against more juvenile wood or sapwood.