This ceramic fiber cloth is designed for use in your kiln. It allows among other things the easy construction of a firing container when use with brass wiring. So if you have a kiln that doesn't allow size wise for the use of a stainless steel container this product is for you. It is a technique that is taught by Hadar. You can find how to use it in the PDF instructions found on this page. It allows about 6 -10 firings.Click here for instruction on Hadar's Clay as well this Fiber ClothClick Here for MSDS on this Fiber Cloth