This is stone ware. Because it is stoneware clay and will be fired in a kiln, I do not use an armature. It is just a matter of sculpting the legs to the thrown vase and letting them get leather hard by propping them in place. I store my WIP in plastic sacks that I get from Walmart. This allows me to work on them for weeks as long as I continue to spritz them. Then It is a matter of making sure they balance when they stand.