Bosch HES436U Electric Kitchen Range "aluminium foil stuck bottom oven" Questions

...remove this. there is no easy answer to this except elbow grease. however, i often put aluminium foil on base of oven with no problem. did you leave it there during self-clean when temp is very

...foil stuck to the bottom of the oven, any ideas on how to remove. Caustic soda rapidly turns aluminium to a foamy grey goo. It also happens to be the basic chemical upon which many proprietary oven ...