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New Build First Generation Batchbox 6" Double Brick Bell

 
thomas rubino
master rocket scientist
Posts: 6825
Location: latitude 47 N.W. montana zone 6A
3759
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posted 3 weeks ago
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The most challenging part of any build is just getting started.
It has taken a year to accumulate the materials for this build.
Today, I mudded down the first layer of bricks for the inner bell of the new Studio Dragon.
She will utilize the same core that we used before, but in a new double-skin bell.

To see the preparation that went into this build, take a look at this thread.
https://permies.com/t/280588/RMH

With the experienced help of Canadian Rocket Scientist Gerry, I hope to have this completed within the next few weeks.

20250907_161720.jpg
Dry stack
Dry stack
20251001_123037.jpg
The first bricks
The first bricks
20251001_151708.jpg
First layer Inner skin completed
First layer Inner skin completed

For all your Montana Masonry Heater parts (also known as) Rocket Mass heater parts.
Visit me at
dragontechrmh.com Once you go brick you will never go back!

 
Peter van den Berg
gardener
Posts: 1134
Location: +52° 1' 47.40", +4° 22' 57.80"
529
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posted 3 weeks ago
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Hi Thomas, I think I spotted the first mistake. The exhaust box, for want of a better term, is too cramped, it should project at least half a brick further to the rear. As it is, there's no chance that the projected stove pipe could go straight up, the outer skin's thickness would prevent that. The picture of the dry stacked layout shows this very clearly.

It might be that the current stove pipe position allows it to go straight up. In that case, the whole of the inner skin should shift (at least) half a brick to the front.

regards, Peter

 
thomas rubino
master rocket scientist
Posts: 6825
Location: latitude 47 N.W. montana zone 6A
3759
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posted 3 weeks ago
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Ha, day one and I've made the first mistake!
Thank you, Peter, for noticing.
I'm sure that after I had gone up several layers, I would have noticed... and then had to disassemble it all!
Having never built a double skin before, I do not feel too bad about this.
Thank Goodness, I have you looking over my shoulder!

Stay tuned for updated pictures later today.

For all your Montana Masonry Heater parts (also known as) Rocket Mass heater parts.
Visit me at
dragontechrmh.com Once you go brick you will never go back!

 
thomas rubino
master rocket scientist
Posts: 6825
Location: latitude 47 N.W. montana zone 6A
3759
I like...
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posted 3 weeks ago
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Here is the improved version of the inner skin's first layer, and the start of the second skin.

20251002_110050.jpg
[Thumbnail for 20251002_110050.jpg]
20251002_120123.jpg
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20251002_140945.jpg
[Thumbnail for 20251002_140945.jpg]
20251002_140959.jpg
[Thumbnail for 20251002_140959.jpg]

For all your Montana Masonry Heater parts (also known as) Rocket Mass heater parts.
Visit me at
dragontechrmh.com Once you go brick you will never go back!

 
Peter van den Berg
gardener
Posts: 1134
Location: +52° 1' 47.40", +4° 22' 57.80"
529
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posted 3 weeks ago
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Looks correct so far, don't forget the clean-out.

regards, Peter

 
thomas rubino
master rocket scientist
Posts: 6825
Location: latitude 47 N.W. montana zone 6A
3759
I like...
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posted 3 weeks ago
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Today, I finished the first layer of the outer bell and started working on the second layer of the inner bell.
Built a block-out for the location of my cleanout door.
I'm using pieces of my Solex roofing as spacers to maintain a consistent gap; they work much better than cardboard.

20251003_122633.jpg
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20251003_122938.jpg
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20251003_135658.jpg
[Thumbnail for 20251003_135658.jpg]

For all your Montana Masonry Heater parts (also known as) Rocket Mass heater parts.
Visit me at
dragontechrmh.com Once you go brick you will never go back!

 
thomas rubino
master rocket scientist
Posts: 6825
Location: latitude 47 N.W. montana zone 6A
3759
I like...
cat pig rocket stoves
posted 3 weeks ago
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Once this build is completed, I will have a place to display my new dragon art!
A gift of appreciation from Scott @ Iron Design L.L.C. in Iowa    https://irondesigniowa.com/

I'm not sure if I will hang the red side or the black side.
Currently,  I'm considering painting a square of bricks black and using the red side for display.
thumb-20250402_175909.jpg
[Thumbnail for thumb-20250402_175909.jpg]
thumb-20250402_175925.jpg
[Thumbnail for thumb-20250402_175925.jpg]

For all your Montana Masonry Heater parts (also known as) Rocket Mass heater parts.
Visit me at
dragontechrmh.com Once you go brick you will never go back!

 
Cedric Noussan
Posts: 68
Location: North italy
28
posted 3 weeks ago
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thomas rubino wrote:Once this build is completed, I will have a place to display my new dragon art!
A gift of appreciation from Scott @ Iron Design L.L.C. in Iowa    https://irondesigniowa.com/

I'm not sure if I will hang the red side or the black side.
Currently,  I'm considering painting a square of bricks black and using the red side for display.



Interesting! I'd love to have a similar sculpture attached to my rmh. How do you plan to attach it to the outer skin?

Cedric

 
thomas rubino
master rocket scientist
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Location: latitude 47 N.W. montana zone 6A
3759
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I have small, round 12mm x 3mm rare earth magnets.
I'll epoxy them to the brick. With a double skin bell, it will not get hot enough to release the glue.
My Dragon is made from steel and will stick right on, as well as pop right off if I need it to.

For all your Montana Masonry Heater parts (also known as) Rocket Mass heater parts.
Visit me at
dragontechrmh.com Once you go brick you will never go back!

 
Fox James
Rocket Scientist
Posts: 842
Location: Guernsey a small island near France.
339
posted 3 weeks ago
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Hi Tom, not applicable in your case but as a point of interest …. I used two small,  powerful magnets to hold open a door on my vortex J tube. I fixed the magnet to the door and let it stick to the barrel, worked perfect for about half an hour and then the magnet ‘de magnetised’  and the door fell shut!
I am guessing the heat (about 250c) must be responsible.
Being a bit gullible, I firstly assumed the magnet was a dud and replaced it with another one for only the exact same to happen again?
 
thomas rubino
master rocket scientist
Posts: 6825
Location: latitude 47 N.W. montana zone 6A
3759
I like...
cat pig rocket stoves
posted 3 weeks ago
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Today I welded up a frame for the core to sit on from 3/16" angle iron.
I'll add the feet when I know the exact height it needs to be.
20251006_124916.jpg
[Thumbnail for 20251006_124916.jpg]
20251006_124905.jpg
[Thumbnail for 20251006_124905.jpg]

For all your Montana Masonry Heater parts (also known as) Rocket Mass heater parts.
Visit me at
dragontechrmh.com Once you go brick you will never go back!

 
Toto, I have a feeling we're not in Kansas anymore. Check the tiny ad.
montana community seeking 20 people who are gardeners or want to be gardeners
https://permies.com/t/359868/montana-community-seeking-people-gardeners
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