Here is my submission for the Rocket - Sand - Start and Operate a Different J-Tube Rocket Mass Heater BB.
The first RMH I started lives in the Library at Wheaton Labs. The second is the Minnie Mouse in the Love Shack. The Minnie Mous has all the mass stored in the barrel and takes a while to heat up unlike other units with mass benches and ducting.
To document the completion of the BB, I have provided the following:
o pic (or 2) showing the 1st and 2nd rocket mass heaters to clearly show that you used 2 different rocket mass heaters.
o pic of starting materials before starting the fire
o pic of fire started
o pic of additional wood added
o pic of more additional wood added
0-Library-Chimney.JPG
The RMH Library - 8-in chimney and mass bypass valve
1-Minnie-Mouse.JPG
The RMH Minnie Mouse - 4-in chimney and smaller footprint