Bernard,
Since I'm designing and not replicating, there is no image of an actual leg to provide. The curves do not need to be super accurate. The execution of the real thing is done by applying a pair of mirrored patterns to two adjacent faces of a board carefully matching their orientation to each other. The pattern on one face is then cut out using a band saw (or other saw capable of making curved cuts), and then the waste from the cut is taped back in place, and the adjacent pattern is cut out. This leaves a squared off version of the leg which is then rounded appropriately using rasps or other freehand tools. While pairs or sets of the legs need to be very similar to each other, this is not (in my case at least) a machining process which requires super accuracy.
Thanks for the CTRL-Erase tool trick.