my bread caused the bottom and top to be glued together after the 30 min cooking.  I had to take a screw driver and hammer to it to get it separated and then some of the bread had also stuck to the sides so it all broke apart.  I stuck it all back together and put back in the oven for final 10 minutes of cooking.  I think it would of been pretty if the top and bottom had not glued together.  This was sour dough which tends to spread out too.  not sure that 30 minutes was enough to be done in the middle also.  my recipe says 45 minutes not 30. I cooked 35. after the final 10 minutes without the top it is only 200 degrees inside.  I'm waiting until it is 210 degrees until I take it out of the oven.  I don't know whether to recommend it or not.  maybe an expert bread baker could make this work.  it could of had more directions.  maybe parchment paper would help but not supposed to use it in an oven hotter than 425.