I'm thinking about joining this. I have some goat milk based lye soap I made during the holidays. It works great but im still in learing process I would want to make some more special soap for the swap, but I wont have any more goat milk til about middle of march. I guess I could just do a water based. Im also guess this is for Lye based soaps only (as apposed to glycerine or whatever) too.. I haven't seen anyone ask that question so that must be a given.