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Permsteading.com • View topic - In the planning

In the planning

Rocket Mass Heaters, Rocket Ovens, Cold boxes, Solar collectors, etc..
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Moderator: matt walker

Re: In the planning

Postby mannytheseacow » Thu Jan 30, 2014 7:09 pm

I wouldn't sweat your soil too much. Especially if you're going to brick up the exterior anyway. What you've got will probably do just fine for fill!
"Knowledge is power. Arm yourself."
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Re: In the planning

Postby hpmer » Thu Jan 30, 2014 10:51 pm

It's not MADE of horse manure, it's merely covered in horse manure. Tell your wife that and see if it makes a difference :lol:
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Re: In the planning

Postby 4seasons » Sun Feb 09, 2014 12:57 am

I think I might have hit a lucky streak. The weather warmed up enough that I could go dig some dirt and test for clay. My neighbor just had his ponds cleaned out. While most of my dirt is sandy with lots of slate I found a pile of pond cleanout that is grayish brown. From what I understand this sounds like free fire-clay to me so after some straining and draining I have a few pounds of what I believe to be fire-clay hanging to dry. So I am thinking I can use this free fire-clay and some wood ash and maybe something else as a binding agent to make a scaled down cast prototype for free. If it works I may even use it as an outdoor kitchen. Anyone try this before? If so what did you use for a bonding agent?
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Re: In the planning

Postby matt walker » Sun Feb 09, 2014 2:15 am

I've built lots of short lived cores with just found clay and sand, sometimes perlite, sometimes straw. I've never used a binder but I expect you could mix in a bit of furnace cement and it would set up fairly hard. I think it would be well worth doing, regardless of whether it lasts a few hours or a season.
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Re: In the planning

Postby hpmer » Mon Feb 10, 2014 12:45 am

The wood ash itself should make a good binder. It'll make the mix quite sticky.
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Re: In the planning

Postby ByronC » Thu Mar 06, 2014 3:20 pm

Here's an interesting non-barrel RMH with metal cook surface. Counting the exhaust stack tubing there are several problems with the construction method and materials choices, in multiple areas, and an obvious lack of expansion joints between the "burner", decorative cob, steel cook surface (should be floating cast iron) and etc. But it might give you some ideas for doing one up right:

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