Well I got the idea from mrherosuper in this thread, haha. So as far as I’m aware, he owns the patent on this idea. 
And mine is still beta version 2, so don’t expect too much, lol.
I run mine around 385*F (196C) and that works well for most MCPCB reflowing with the common 60/40 or 63/37 solders. Little-to-no charring on my pine block at that temp. When I turn it up above 400F for more difficult jobs I start to smell a little bit of wood char, but it’s still pretty minor.