After perusing posts about the Gingery furnace and visiting
'%20Bertha.shtmlI have bought myself a nice little thermocouple and controller kit on
e-bay with the intention of constructing a small tempering and
annealing furnace and maybe doing some enameling.
Nothing so ambitious as a melting furnace for metal casting.
Anyhow, the question of what to use as a heating element arises. Where
does one buy suitable heating coils, and how do you calculate how much
you need with respect to the volume of the furnace? Would a stove
element do? Or some other clever substitute for expensive purpose
built oven elements? I have both 115 and 240 volts available at up to
18 years ago