For all your Montana Masonry Heater parts (also known as) Rocket Mass heater parts.
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There is no good substitute for using heavy full-size firebricks to create your rocket core.
Beyond the core, your choices go up.
Solid clay brick is very common.
Concrete blocks can be used in certain spots.
55-gallon barrels can be cut length-wise to create a half-barrel bench with no piping.
Stratification chambers (bell) can be built to fit in any location.
Tell us what you have in mind.
Cristobal Cristo
Post Today 22.33.07 Subject: Calcium silicate board with clay and sand mortal
Regular clay/sand mix will quickly crack and will probably fall off due to shrinkage and different expansion ratios.
Using zirconium coating could help a little against flame erosion, but the boards are so soft (I have some) that they will be quickly destroyed by loading and cleaning.
Fox James
Post Today 22.17.59 Subject: Calcium silicate board with clay and sand mortal
You could try painting it with Zircon.
For all your Montana Masonry Heater parts (also known as) Rocket Mass heater parts.
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thomas rubino wrote:That is a refractory tile. apx. 21 x19 x 3 thick
It does not say how high it is rated but probably 2500F +
It would make a fine batchbox roof.
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!
he airframe construction for Shorty requires welding and cutting and must be built exactly to specifications.
The door for Shorty is easy and can have a large window.
Your bell needs a bypass, and almost all should have one.
With a 3' horizontal to your outside chimney, you want a steady stream of hot air to get the system moving up and out of your house.
Build your outdoor chimney with a cleanout door you may need to put burning paper in it to start the draft on a cold chimney.
Believe me when I tell you there is nothing worse than a stalled rocket stove venting indoors!
As far as the P-channel, nobody builds with them anymore.
The floor channel has replaced it.
My quick-change secondary design is easy to make, the 6" riser stub can be plain carbon steel or the RA extreme heat material and swapped out in moments.
Now my two cents worth.
As a first-time builder, a traditional Batchbox is easier to build than a Shorty core, but I just built a Shorty and so can you!
You can study my threads on Shorty construction and airframe construction and build what you feel comfortable building.
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!
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