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rocket stoves

what is fireclay? where can I find it?

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posted 4 years ago

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I just watched a YT video where the guy used 14 parts fireclay, 14 parts perlite and 1 part furnace cement to make his own insulated RMS core. I went searching for fireclay on the homedepot, menards, boomgaars and TSC websites and couldn't find anything. Does this 'fireclay' go by some other name?

John C Daley

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Location: Bendigo , Australia

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posted 4 years ago

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Try refractory supplies.

John Daley Bendigo, Australia The Enemy of progress is the hope of a perfect plan
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thomas rubino

master rocket scientist

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Location: latitude 47 N.W. montana zone 6A

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posted 4 years ago

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Hi Dan;
It is Fireclay. Lincoln 60 is one brand. Hawthorn is another.
In Canada it seems particularly hard to source.
Some folks can not find it at all. Others like me can buy #50 sacks for $7.50
You want to locate a Masonry supply house.
Here in the Northwest, Mutual Materials is my go to place.
If I'm over in Spokane I go to White Block and pay $10 a bag.

What part of the world is your home located?

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!

C. Letellier

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Location: Greybull WY north central WY zone 4 bordering on 3

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posted 4 years ago

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For MT and Norther WY suggest Archie Bray Clay out of Helena. Really nice selection of pottery clays. And they have 3 brands of fire clay too. Really neat toy store for anyone into clay or pottery.

Since they are forever changing page links putting the general web address in here firstArchie Bray Clay as that much is as least always stable.

The current link to the materials page is Raw materials Likely it will only be good for 6 months or a year though so don't be surprised if it dies soon and you have to start from the main webpage and branch down to the page.

Country oriented nerd with primary interests in alternate energy in particular solar. Dabble in gardening, trees, cob, soil building and a host of others.

Dan Swartzenheimer

Posts: 32

posted 4 years ago

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Thanks, that's good info.

Dan Swartzenheimer

Posts: 32

posted 4 years ago

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It looks like the nearest place I can find fireclay is in Denver:
rockymountain clay
I'm near Douglas, WY so I could have them ship it. Now I'm wondering how much I would need (in pounds) for the average rocket stove.

thomas rubino

master rocket scientist

Posts: 6777

Location: latitude 47 N.W. montana zone 6A

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posted 4 years ago

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Hi Dan;
I checked out that link. Maybe I did not see the dry fireclay.
What I did see was wet fireclay. That's not what your looking for.

Casper isn't that far off. Someone there is building fireplaces. They use firebricks and fireclay to do that.
Call up a contractor and ask where they buy their fireclay.

It is $7.50 a #50 sack in Missoula
At our tiny country hardware store in Noxon it is $15 a sack.

If our little tiny store has it... so does a little store closer to you than Denver.

20210729_162816.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: 6777

Location: latitude 47 N.W. montana zone 6A

3668

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posted 4 years ago

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Hi Dan;
If your still looking for dry clay.
I've started selling Lincoln 60 fireclay from my store.
I can fit #20 in a large flat rate box.
For $30 I can ship fireclay anywhere in the lower 48.

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!

Dan Swartzenheimer

Posts: 32

posted 4 years ago

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Where are you located at?

Dan Swartzenheimer

Posts: 32

posted 4 years ago

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Well I could've looked at your bio: So what part of Montana? Is it any closer than Denver from Douglas, WY?

thomas rubino

master rocket scientist

Posts: 6777

Location: latitude 47 N.W. montana zone 6A

3668

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posted 4 years ago

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Hi Dan;
I'm in NW Montana past Missoula, near the Idaho border.
Shipping cost on a flat rate box is the same no matter where you are.
I can ship you #20 for $30

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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