Pros : easily repairs broken bisque slump mold for glass fusion
Cons : none that I experienced
Other Thoughts : between Delphi's great customer service and this product I was able to repair an expensive slump mold that I had broken into 3 pieces. Bisque fix quickly "glued" the broken pieces together and since mold has been refired in ceramic kiln, mold is as good as new. Saved me a bunch of $$$$.