Build a Season Extender Rocket Mass Heater - earthworks.iron.extender PEP BB

This is a badge bit (BB) that is part of the PEP curriculum.  Completing this BB is part of getting the iron badge in earthworks.

For this BB, you will build a season extender rocket mass heater!


(source: Season Extender RMH - Thread

Relevant Permies Threads:
Season Extender Rocket Mass Heater
Microdoc: Season Extender Rocket Mass Heater
Build a J-Tube Style Season Extender RMH in a Hugel - PEP BB rocket.wood.hugel

To complete this BB, the minimum requirements are:
  - hugelkultur is at least 8 feet tall
  - at least 30 feet long
  - stratification chamber

To show you've completed this Badge Bit, provide proof of the following as pics or video (less than two minutes):
  - the site before you begin work
  - 5 points during construction of the RMH
  - the finished project from several vantage points
  - hugelkultur temp before and after using the heater