Pros : The molds make a piece that is nicely shaped.
Cons : I coated the smaller mold with shelf wash and fired it and I couldn't get the glass off it. I refired it and thankfully the glass came off. I then used shelf paper and fired a new piece and the glass came off a little easier. I wouldn't fire again using only shelf wash. The molds are too large and you end up with a piece that is way to heavy to be supported by the night light kit that you glue it to.