I garbage-picked an old 30" westinghouse electric range.  It appears to have 31/2" or 4" of insulation on all sides of the oven.  I'm impressed.  I wonder what temp it could achieve.  I'm only looking for 750F or maybe 800F-- pizza temp.  The temp of the external sheet metal is likely to be a limiting factor, but that could be further insulated.The wiring could stink or fry, but a wiring upgrade wouldn't be too hard.

Anyone in the community have experience with this sort of project.  Any leads on a thermometer that will be good to 800F?  The range is outdoors so I don't need no warnings about burning the shack down.

Stay tuned.