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Author Topic: Castable Firebrick Homebrew recipe  (Read 790 times)

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Offline peteH

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Castable Firebrick Homebrew recipe
« on: March 26, 2018, 08:07:55 PM »
I modified the subject line as there was a concern it might be confused as a misrouted beer forum post (although pizza and beer go together perfectly!).  So I have seen 2 recipes on the forum for homebrew castable mortar, either 3:1:1:1 or 6:1:1:1 (sand:portland:lime:fireclay).  What is the difference between the two (besides the obvious), is one better than the other? 
« Last Edit: March 27, 2018, 10:53:16 AM by peteH »

Offline vtsteve

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Re: Homebrew recipe
« Reply #1 on: March 27, 2018, 12:02:56 AM »
The second one is the correct one. The mix with the higher percentage of sand is less likely to shrink/crack.
« Last Edit: March 27, 2018, 11:18:31 AM by vtsteve »
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Offline TXCraig1

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Re: Homebrew recipe
« Reply #2 on: March 27, 2018, 09:22:55 AM »
You might get more responses with a different subject title. Nobody is going to read "homebrew recipe" and think anything but beer regardless of what forum you post it in.
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Offline bradtri

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Re: Homebrew recipe
« Reply #3 on: March 27, 2018, 10:13:33 AM »
I prefer to have as little sand as possible  in my beer.

To at least add something of value, the forno bravo build forums are very active and might be a good place to also ask this question. 

https://community.fornobravo.com
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Offline Tscarborough

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Re: Castable Firebrick Homebrew recipe
« Reply #4 on: March 27, 2018, 07:03:00 PM »
It has been answered over there many times.  The second is the correct one, but either will work to a certain extent.  With either you should use stainless steel needles for the best result.

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Offline peteH

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Re: Castable Firebrick Homebrew recipe
« Reply #5 on: March 28, 2018, 07:18:29 AM »
Can you tell me where to get the stainless steel needles and how much to use?, thanks!

Offline vtsteve

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Re: Castable Firebrick Homebrew recipe
« Reply #6 on: March 28, 2018, 10:11:12 AM »
Ebay, 3-5% by weight. Just google "stainless steel needles for concrete" or "stainless steel needles for refractory".
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