Let me do some digging on FB. A few people have posted the builds for these type of hot boxes. I don't like the "Tool Box" type because of the Kaowool fibers floating everywhere, You can seal it with a colloidal solution but you don't want to be breathing that stuff. I've built crucible furnace before but not kilns. Too much dust for my taste. I just buy completed units these days.
In reference to the "Controller" board, if you use one such as a Sentry 5.0 then you are correct about pricing. Sentry 5.0 MSRP is $360.
Bare with me and I'll see if I can dig up the last build post I seen on FB.
Don't hold your breath, it may be a few days.
|