One more thing, young mystic.

After you make your clay as pure as can be, you should add some silt and sand back in. In a controlled way. It minimizes cracking, because silt and sand don't expand as much as clay (or at all) when hydrated. From my experience, a tablespoon of dry silt should be enough grog for a single bowl. You can also use other kinds of grog, depending on what qualities you want the fired ceramics to have. If you want porous, you add used coffee ground (it pyrolizes during firing and leaves pores). You can also add various metals to change color and qualities of the ceramic.

And the process I described does work. Tried it myself. Seen it done by others. It does make the clay more workable. If you fire it right, it makes a perfectly functional ceramic (something that usually wouldn't be possible without this process).