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High carbon steel pipe Does it need isulation?

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Building my first rocket stove useing Oil Drum and 8" dia. 1/4" thick High cardon steel pipe. Will this suck too much heat from my starting fire? Can I put the horizontal pipe on a 1/8 grade to channel the extra smoke to the burn chamber? How necessary is a vertical feed tube? Initially Ill be venting it through my old fireplace because I currently live in a doublewide It has sturdy floors but I have yet to see a TMH installed in one. Not to mention I need it ASAP and the Thermal mass will take time to build. Any and all help would be much appreciated.
03 for life Semper Fi
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Location: Northern New York Zone4-5 the OUTER 'RONDACs percip 36''
hugelkultur fungi books wofati solar woodworking
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Ray Dillion : God bless you! and a happy ''These colors don't run day'' to you too ! you are in good company here, even if you hear more about the 'Golden rule'
than Hoahs ! Welcome to Pemies.com / richsoil.com, and the Rocket And Wood Stoves Forum Threads. With 28,000+ Fellow Members you should be able
to come here 24 / 7 and talk to someone who wants to talk about what you want to talk about ( We have a forum for that !)

Because we Heavily insulate completely around the combustion core of our Rocket Mass Heaters Base We see Temperatures in the 2,000ºF range, at those temps
all iron and steels are subject to High Temperature Hydrogen Attack, and Hydrogen/Steam Embrittlement and will quickly fail ! Save your 8'' stuff for launching
your 'foo-gas'!

Oh ye of little faith, add a slope angle if you want to, it is unneeded in a well made Rocket Mass Heater RMH.

The vertical feed tube allows us to create a micro environment where the bottom ends of our wood fuel pyrolyze releasing the flammable wood gases creating
their complete combustion just inches away at such high temperatures that we have a very clean burn with zero Carbon Monoxide and zero Creosote, a chimney
fire is impossible where there is nothing left to burn ! Plus as the ends of your wood fuel is consumed the Vertical Feed guarantees that the rest of your wood is fed
down into the burn tunnel through gravity, You will quickly learn to monitor the the background throaty purr of the Happy 'House Dragon' in your RMH adding more
fuel as needed -with no more thought than refolding a topo map to show your present location !

As with any new training exercise you want a safe location to breakin the troops, it is highly recommended that you practice your initial build outdoors, here the
cell phone camera is your biggest support tool, instantly letting you figure out why your second layout does not look like your 3rd !

Your F.M. will not be issued to you, you need to go to Rocketstoves.com to Download your PDF copy of the 3rd Edition of Rocket Mass Heaters,

Make no mistake this is 'The Book' with over 100,000 Built world wide most were made following the 'The Book' and 95% of all the 1st time builds (that worked )
were made following this book, this will quickly bring you 'up to speed' giving you the simple vocabulary needed to discuss your build with your fellow Rocketeers
high speed, low drag, conversations understood by both parties as you describe Sizes, shapes, materials and orientation of parts both to themselves and the whole
build !

This book will save you time money and frustration, helping bring good results, and keeping you from trying to reinvent the Wheel !

Let some other mothers son pay the price of not being prepared! Welcome aboard ! Big AL E-7 30+ rtrd
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Location: Southern alps, on the French side of the french /italian border 5000ft elevation
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Metal is doomed!
Thank you my well lotioned goddess! Here, have my favorite tiny ad!
BWB second printing, pre-order dealio (poor man's poll)
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