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  #61  
Old 01-29-2013, 01:05 AM
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Default Re: Rustic Primitive Materials

Gudday Annie
The "home brew " mix has
Sand... The aggregate, the matrix ,all the other parts fill the spaces inbetween the grains
Portland cement ....the "glue " that sets first and holds the show together till the temps of your oven destroys it
Hydrated lime.....the higher temp "glue" that takes over from the Portland getting stronger in the heat
The clay..... Makes the mortar stick better to the brick, let's you squish the brick down if its to high. Slid the brick a bit when not perfect without it the mortar will come away from the brick. It's the part that allows " masonry inpaired" folk like myself to build a 1/2 reasonable oven.
By the way wash that beach sand to remove the salt it weakens mortar and concrete

Regards Dave
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Last edited by cobblerdave; 01-29-2013 at 01:09 AM. Reason: Spelling
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  #62  
Old 01-30-2013, 09:02 AM
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Default Re: Rustic Primitive Materials

Way to go girl. Just like the old time masons.
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  #63  
Old 01-30-2013, 10:11 AM
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Default Re: Rustic Primitive Materials

Mortar 2 pcs of brick together and throw that into the fire.
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  #64  
Old 01-30-2013, 10:22 AM
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Default Re: Rustic Primitive Materials

IMHO, the home brew is that the WFOs use is tried and tested. I believe you do not have to do a "test" if you use the common 3:1:1:1 ratio that was talked about earlier in you thread. What you will find as a variable is how much water you will need to make the homebrew the right consistency (like peanut butter). Soaking the bricks in water before you slathter on the mortar is a good suggestion. Good luck, will be watching your progress.
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  #65  
Old 01-30-2013, 01:04 PM
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Default Re: Rustic Primitive Materials

Tscar is the expert on lime. I defer to him, there has been lengthy discussions on S and N limes. Not in my pay grade.
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  #66  
Old 01-30-2013, 01:31 PM
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Default Re: Rustic Primitive Materials

Type S mortar may or may not have lime in it, use Type S lime if possible.
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  #67  
Old 01-31-2013, 11:54 AM
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Default Re: Rustic Primitive Materials

Way to go. What clay are you using. Is this why there was talk about a test fire? Fire clay (HC Muddox's mason fire clay) is rather inexpensive I think I paid $10 a bag and used 1.5 bags on my build. Should be able to find at any mason/brick supplier. Good luck.
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  #68  
Old 01-31-2013, 11:58 AM
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Default Re: Rustic Primitive Materials

Those are reasons to keep an eye on you. By the end of this project you're going to be full of helpful information for the newbies. Hang in there and keep on keeping on. Got your back.
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  #69  
Old 01-31-2013, 01:16 PM
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Default Re: Rustic Primitive Materials

Annie,

Go to the HCMuddox web site and it show the distributors, not sure where in the Pacific Northwest you are located but Muddox has distributors in both Washington and Oregon. Hope this helps. At least you have a know qualtity of clay by using this product. I have a ceramic/pottery background and some clays have a really low fluidity temperature, ie earthenware versa stoneware vs porcelain. Just a thought.

Last edited by UtahBeehiver; 01-31-2013 at 01:21 PM. Reason: typo
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  #70  
Old 01-31-2013, 01:38 PM
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Default Re: Rustic Primitive Materials

If it is indeed volcanic bentonite (which I would almost bet on), it is high in kaolin which should work fine, IF you can get it dry enough and IF you can get it ground fine enough.
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