Walnut Stool uses some of the most beautiful walnut I have ever seen. Walnut is very sought after for furniture making. This particular walnut has color that is amazing. Walnut is a native species to North America, https://en.wikipedia.org/wiki/Juglans#Wood
Other examples of stools; https://www.cosmobarbaro.com/product/espresso-stool/
This Walnut Stool has a 3-leg design with a lamination for the lower rail. A grinder texture is visible and creates a sense of depth. Aluminum pins lock in joinery and create a distinct contrast with the walnut. Like cherry walnut far superior color wise when it is dries by air.
There are 2 processes for drying lumber. The first is air drying and the second if kiln drying. Air drying involves mother nature and particularly wind to dry the lumber. Kiln drying involves a large oven that essentially bakes the moisture out of the lumber. Air dried lumber is around 12 % moisture content and kiln-dried lumber is around 5-7%. The color of kiln dried walnut is more like a washed out brown as opposed to a vibrant brownish purple color. Walnut is the most expensive domestic hardwood. There are subspecies that peak my interest like claro walnut. https://www.wood-database.com/claro-walnut/ This material in California, and I hope I get a chance to work with it. Example of other types of stools Cosmo Barbaro Furniture makes. https://www.cosmobarbaro.com/product/minimal-stool/
The thing about stools is that they take a lot of abuse. Mortise and tenons ensure the piece will hold up to abuse. The geometry of this stool is as follows, there are 3 main supporting legs and 3 rails. The main supporting legs is the back leg. It has a rail that connects it to a front rail. All joinery is exposed and features aluminum pins.