Kiln Posts - 1" Square

1" square post are commonly used for smaller kilns doing low fire work, althought they work at high fire. These posts are good up to cone 10 high temperature firing and are available in a variety of lengths. Choose the size of your post above.  Square posts have fluted sides and a hole through the center. 

 

The manufacturer rates them for cone 10.  They are quite stout, so you should be able to take them higher (cone 11 or possibly cone 12) depending on how heavily/evenly they are loaded. If stacking more than 10 shelves high, you might try using a half brick soap as a kiln post.