Helpful tip:

If your oven has concealed elements, do NOT mistake the bottom of the oven for a shelf on which to put a drip pan or aluminium foil. They will melt to the enamel permanently, which is not only a costly fix, but can also cause the heating elements in the bottom of your oven to short out due to the melted aluminium keeping some of the heat from rising into the oven cavity. Studies also show that aluminium contains chemicals that can be harmful to the human body, so it would be unwise to continue using an oven that has the metal being heated to melting temperatures every time you are baking. The general rule of thumb is never to put anything on the floor of the oven.