I have been busy studying various rocket stove designs.
Facebook offers some incredibly innovative designs, largely based on metal cook stoves but there are plenty of super insulated high temperature builds too.
I got diverted to log burning stoves and found some interesting seemingly smokeless designs but funny enough the log burning discussion finally lead me back to this forum and F Styles build here https://permies.com/t/54074/Rocket-Mag-heater-Rocket-Mag
I have read through the thread and find it very interesting.
However unless I missed a few bits of conversation, it seems the design works best or perhaps ‘only’ with large logs?
It looks to me like the 6” half circle in the burn chamber needs to be covered by the flat base of a large log and smaller diameter fuel might not work?
Apart from the slightly scary ‘flash back’ risk this seems to be to be a fantastic design!
He talks about 1000f on top of the barrel with what must be a short riser and using quite basic materials.