I have been making a couple perch stools this Spring. Got the design from Peter Galbert's blog.
I didn't turn the legs. I rived them from a board. I really love this technique. You waste a little, but the grain comes out perfect. It's faster, and less dusty than using a bandsaw. I was able to split these all with a simple hatched and rubber mallet. The tapered tenons were turned on the lathe. I used a drawknife to do the rough shaping on the legs. The drawknife, block plane, and spoke shave behaved so wonderfully, without having to deal with any grain direction/run-out.
I did use an angle grinder to scoop the seat.
PG's method of work really appeals to me. He uses mirrors to align the drill angles, and has a really neat trick for drilling angled holes in the legs for the stretcher.
Apologies in advance for my picture-taking ability.
I did misjudge the wedges. I was not careful about their taper, and did not account for the fact that the front hole has the potential (for the drilling-impaired) for more slack than the rear holes by virtue of it's increased angle. One of them appears to have even split. At least people will know that *I* made it
I've been doing a good bit of reading on Windsor chair design and technique. If anyone's interested, I recommend highly Galbert's blog, Curtiss Buchanan's videos, and (reluctantly) Mike Dunbar's book.
I've read Dunbar's book cover-to-cover about 3 times now, and once you get over his style, there are wonderful gems in here - especially about the genius of Windsor chair design.