Pros : Released easily with MR97, five thin coats for the first application and three thereafter.
Make sure you fill the edges evenly. Used combo of medium and fine frit to fill the edges and broken up odd cuts. I already have orders from coworkers who really like this even if it is not slumped. Have created 6 castings so far and each has been great, no spurs. Provided fusing schedule has worked well.
Cons : None, good way to use up scraps!
Other Thoughts : Wish they had a larger version.