BuckeyeHughes, Did you suspect there were this many responsive shaving horse riders out here?
There are two basic styles. The English bodger with two shafts holding the head and the German style with a single shaft in the center. Each has it's own advantages and disadvantages. Depends on what you are doing and are used to!
Check out the Roy Underhill books. You'll get all you'll need to make a shaving horse, plus a lot more.
The horse must
fit the worker, not the other way around. Fit the leg length, knee to pedal, riser height and ramp angle to suit your body and style. If nobody else is comfortable, so what!
Put the legs in tapered holes so they can be pulled. Makes storage better and easier transportation!
My horse has three legs. Makes it more stable on uneven ground! Didn't plan it that way, the main plank twisted a bit, so I encountered, adapted and overcame!
Made mine to the German style, from a tulip poplar log about 1-foot in diameter and about 5 - 6 feet long. The planks were riven with wedges and gluts (wooden wedges). Far easier than sawing! Just requires a straight-grained log which tulip poplar tends to be. Split off two planks about 3 to 4 inches thick.- one is the main and the other becomes the riser and ramp. The remainder is das dumkopf (Yes, dumb head!
It, not you!
) and legs. Decide how big the head is to be, saw in from each side to where the shaft is to be, take a deep breath and split the waste off! Shave the legs to suite and fit them to the tapered holes. Get some red or white oak and rive pegs to hold the ramp and riser and for a pivot for the dumkopf. All this is much easier if you have a shaving horse, of course!
Then get to shaving!