ride down the road
notice any discarded piles of stuff
stop and look for heating type devices
toaster, radiant heaters, etc.
find a central heating electric blower unit
lots of heating element in there
dismantle and save elements, controllers, etc.
build like crazy
obtain variac, phase control device (dimmer) to vary power same as heat produced
get fancy
build parallel port controller
and on and on and on.
fire clay makes great crucible
embed elements into wet clay and dry in oven
don't energize the element fully first time
work up to the sun level
confer on various libraries concerning
fabrication of furnaces
especially Journal of Chemical Education
do search thereabouts for approipriate items
(online)
better yet forget conventional heat sources
go microwave - dude/dudess.
do search on espace.net for applicable patents
usually come with nice diagrams
(UTFSE cannot read so good)
go for it. good luck.
Ohyeah please be careful concerning
1-the electrical source
2-the heat.
just glad to bee here-----he he he