You can do this with any freshly sawn log that splits well. Split a log in half. Split the halves in half. Split the quarters in half. Split the eighths in half. You have just converted a log into slats that, if you plane them with two parallel faces, are quartersawn. Though they aren't sawn, but riven.
you've got front legs. Cut a 40” section off the log, split it into 2x2 blanks, drawknife square, drawknife and spokeshave into octagons, you've got back legs. The variations are the differing sizes of the parts, and the tapers given to the legs. Next comes an interlude, a complex polyphonic section featuring cutting a relief, drying rungs, steam bending legs,
One of my classmates has taught woodworking in secondary schools, and I've taught at Highland Woodworking well over a decade, and we both greatly admired Drew's teaching. If you ever get the chance to be in a class with him, seize it. He is a true maestro.