I do not know if I understand word "kiln". For casting you need mold and resin. You sculpt the object. Then you need create a mold (from plaster, but best material is silicon). Two or more parts of a mold, depends on the object. When is a mold put together, you can pour resin, or when is a mold only one half, you can use laminating technique (gelcoat, resin and glass fabric). You can do this in home, without special equipment, but you need use resins like epoxid, polyurethan... Polyester is cheap and easy, but this resin is toxic for styren monomer and odors.
I've been wanting to get my hands on one of these Cintiq but they're really pricey. I still have my Intuos 4 Medium but there's a lot of tiny things I feel that would make my work flow on my projects a lot more streamlined.
This Cintiq is the best from Wacom Cintiq family - my opinion. Size is OK, not big, not small. Cintiq 13HD has nice fine display, but GUI of Photoshop is too small, it's better for programs like ArtRage or Autodesk Sketchbook. Cintiq 24 HD is a very heavy and big - your hand must travel a long way on display. This 22" model is ideal. But yes, you are right, the price is high. In any event, Intuos is more accurate with better response. But if you need a real sketch feeling, then is Cintiq clear choice.