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progress on my greenhouse rocket heater

 
gardener
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Location: latitude 47 N.W. montana zone 6A
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Hi all; Just an update on my rocket heater. Progress has been slow but steady. After i removed the old wood burner, I was able to move my cast core in to place and remove it from the form box , it sure looked small compared to the old stove. Then the real work started!!! COB making is a lot of work ! I had no clue ! Way more sand was needed than i had thought. I found that drying my clay then pounding to a powder worked a lot better than throwing clumps of clay, sand and adding straw. also I learned that cutting that straw down to 2" is important. After a batch or two I had it down. After I had several inches over the core and it was not cracking anymore, I started looking at my pile of free fire bricks and the cob covering my core... I decided that I would probly be the first person to run my clod hopper clad foot into the side and break a chunk of cob off so ..... I'm sure that to some folks this is a waste of good firebrick when plain red brick would have worked , but its what I had and it was free. I will bring the cob up flush with the bricks. Next comes the all important transition to the horizontal pipes ... more pictures then. tom
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pollinator
Posts: 4154
Location: Northern New York Zone4-5 the OUTER 'RONDACs percip 36''
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I was a little surprised by what looks like two vertical chimneys, and My mind was not open to any new ideas and would not let me think outside the box ! Can you share an
explanation of what we are seeing ? Big AL !??
 
thomas rubino
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Hi Al; The two vertical chimneys are just my horizontal piping, standing up waiting for me to get to that part of the project. tom
 
thomas rubino
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some more pics
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thomas rubino
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and more
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thomas rubino
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thought i would show the old wood gobler that is being replaced
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thomas rubino
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Progress moves forward; I have the insulated chimney compleat , and i'm working on the horizontal transition area.
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thomas rubino
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Metal ring in bottom is a form for the ash pit and will be removed when the cob is set up.
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allen lumley
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Location: Northern New York Zone4-5 the OUTER 'RONDACs percip 36''
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Thomas Rubino : hope someone saved the front with the three doors and humidity pan, some day we will get a breakthrough on ether J-tube with windows ,or
horizontal batch loading - ''for the rest of us !'' at that point old coal furnace and wood cook stove doors will be Treasured additions to R.M.H.s Big AL !

It looks really good, I expect your transitional area to act like a 'bell', keep us informed as to how the build is going and final temps ! A. L.
 
thomas rubino
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hi all; some new pics of my horizontal transition area, getting close to putting on the top of my "bell". I will use hardware cloth & cob over the top then a large 2" thick slab of shale over that.
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allen lumley
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Location: Northern New York Zone4-5 the OUTER 'RONDACs percip 36''
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Thomas Rubino : We really do not have enough base line temperature information, to be able to tell exactly what the baseline temperatures of your bell mean. That being said I
Hope there is nothing remotely flammable about the 'OLD" wall you are building up against, Please share as much as you can about surface temperatures as you find them ! Big AL !
 
thomas rubino
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Hi al; The "old wall" will be isolated from mass with concreat board and perlite .This stone wall is used as the foundation of the greenhouse on the east wall and needs to be isolated from the mass to keep it from sucking all my heat outdoors. All temps will be monitered with a digital laser gun as soon as it starts getting even a little cool outside, I CAN'T HARDLY WAIT TO FIRE IT UP !!! Tom
 
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