Excellent information Peter.
Thank you for the quick reply.
This makes things much simpler!
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Day nine;
Today Gerry got both skins to a final height, the outer skin is just short of 6'.
We fixed the roof supports, per Peter's suggestion.
We had exactly enough clay bricks to finish the walls, but not the second skin roof.
This afternoon found us driving 65 miles each way to Sandpoint and buying 70 more clay bricks.
We counted out needing 63... better to many than not enough.
With luck we will get both roofs on, and see how she fly's!
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Day Ten;
Today, I took the angle T-bars and painted the exposed face of them with ITC 100 HT (5000 degree ceramic coating.)
Two of them were over or near the riser and I had left over coating on hand from the Shop Dragon build .
After painting the T- bars I used up the remainder on the bricks inside the core, in particular the port bricks are in an extreme environment.
We used Superwool gasket held on with sodium silicate (water glass) on the angle tees.
And then covering the bell using brand new firebricks with a pure clay slip between them.
After putting a firebrick roof over the bell, we used a 1/4" thick piece of Superwool cut to the size of the inner skin roof.
Then, clay bricks were dry stacked tightly overtop the superwool to create a second roof.
Next we loosened the clamp on the insulated exhaust stack to allow us to install it on the outlet box.
After cutting free some silicone it went smoothly.
Due to a mix up ordering, I did not receive, a four inch 90 pipe to create my bypass gate.
So the decision was made to, attempt her first flight without one.
We metal duct taped over it so she could give it a try.
Late this afternoon, using very dry cedar wood split down small, Studio Dragon took her first flight around the valley!
Almost no issues at all!, Some small smoke's leaking from the cleanout door, and the chimney joints.
With help from a propane torch, she started easy, I reloaded it three times!
The exit chimney temp had risen to 81F before I let it go out for the evening,
A roaring success, after a year of gathering materials, and ten days of hard work by two experienced builders.
There is more work to do before I call her finished, but the hard part is completed!
Studio Dragon Lives again!
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ITC 100 HT
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ceramic coated T-bars
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clay slip (pure clay)
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Inner roof going on.
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1/4" superwool
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putting on the second roof
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second roof on
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exhaust stack in place, bypass sealed off.
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First burn
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nothing but steam
For all your Montana Masonry Heater parts (also known as) Rocket Mass heater parts.
Visit me at
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Great build tom and gerry. Its great to see what you are doing and how you are doing it! thanks for the documentation! Now drop Gerry off at my place please. I could use the help :D
Looks good!
It's a delight to see a build-to-spec heater, it appears to run right out of the box, so to speak. No wonder the chimney is spewing vapor clouds into the air, 81 ºF isn't enough to keep the exhaust gases above condensation temperature. That puddle of water around the exhaust is the tell-tale sign, the whole of the heater has a lot of water in it. Could take some time to get rid of it all.
Keep us posted.
Thank you Peter!
Indeed she has performed outstanding!
We installed a pipe to create a bypass , we could not hook it up and did a cold start .
It has performed so well that I have ordered a cap to securely seal off the bypass pipe as it is NOT needed! (I love it!}
Her "out of the box success" come from your diligent hard work in development.
Gerry and I had it easy.
All we had to do was "Follow a proven plan and get proven results!"
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Outer skin starting to dry
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's experience with the magnets loosing their magnetic properties is interesting to note for the future.
Here's an option to consider Tom. To attach my mule deer art to the bell I very carefully, using light pressure with my hammer drill, drilled into the brick. Thankfully, I was light enough with the pressure to not dislodge the bricks. Then I used plastic spacers and 3 Tapcon screws to attach it. Worked great. The picture shows the Tapcon with the spacer.
Love the dragon... my vote is the red side showing. Another great looking build Tom and just in time for the winter weather to move in.
Today, I gave my baby Dragon her first lipstick, (brick red of course).
She is still a youngster, wet behinds the bricks, but they grow (heat) up so fast!
I must admit that it perked her up and she is looking good!
I'll be experimenting with hanging her bling soon.
Like her big sisters Shorty and Shop dragon, this early beauty treatment will need to be reapplied as she heats up her internal furnace.
Every girl likes being pretty, even Dragons.
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Lipstick and a party dress
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Mid treatment but looking good.
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No wonder she wants to be pretty
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Grey from top to bottom
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She was just born and she looks old and grey
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!
Paper beats rock. Scissors beats tiny ad.
The new gardening playing cards kickstarter is now live!