Large pottery projects require a way to take large slab of clay and turn it into a flat piece that can be used for any creative project or projects. If you have a lot of clay and need it to be rolled into a consistent thickness, there is this slab roller. Get a full $100 worth of glazes from Amaco with this purchase. This roller is a large model that will produce a slab of clay that is 36" wide and 52" long. The maximum thickness of the resulting slab is 7/8". This large roller is just right for thick slabs of clay, but it may not produce a uniform thickness on smaller slabs that are 1/2" thick to 3/8" thick. The slab that is created may be slightly thinner on the edges than in the middle. With thicker clay slabs this difference will not be as evident as with smaller ones. The dimensions of this unit after assembled is 49" wide, 40" high and 76" long.