Marcus Grace : Someone has to do this, it might as well be you. You will still have to do a layup out doors first, so you will need some clay to make clay slip to temporarily
seal off the leaks that setting your rocket burner up dry will automatically cause to happen, You can make up the Feed Tube, Burn Tunnel and Heat Riser with fire bricks and
because your build will be permanent for good or ill you must, plan the insulation for the combustion zone, and the right amount of off-sets to protect your exposures !
A single bag of 'Fire clay' and Perlite and a yard of Builders Sand
should get you through the parts that you
can't don't want to substitute Concrete for Cob!
Concrete is more dense than cob, heat energy will flow through it slightly faster and you can use up lots of natural stone in making up sections of your Thermal Mass Bench,
This is where I ask have you been to
rocketstoves.com for your PDF Copies $15.
oo of Ianto Evans Great Book "
Rocket Mass Heaters " there is
STILL no other book
in any language with more Rocket stove /Mass Heater family information ! (And I don't make a dime !!)
Come back here often, with over 19,000 fellow members there will always be someone here that wants to talk about what you want to talk about ! For the Good of the Crafts!
Think like fire, flow like a gas, Don't be the marshmallow ! As always, your comments / questions are solicited and Welcome ! PYRO - Logically BIG AL