Cordierite Mullite Rectangle Kiln Shelf Tucker Clays More plastic than porcelains but

More plastic than porcelains but semi-vitreous to promote stability in the kiln

it can be difficult to create a single perfect curved line

Layers well with our other Potter's Choice glazes

you can undercut your clay while maintaining the shape of your walls

High Duty Fire Brick Technical Data Sheet

Cordierite Mullite Rectangle Kiln Shelf Tucker Clays More plastic than porcelains butThis kiln shelf is manufactured of a high refractory mullite cordierite clay body that yields a smooth, durable surface for stacking ware in your kiln. All shelves are subject to warpage at high temperatures. It is a good practice to occasionally flip the shelf in an effort to keep it straight.