#21  
Old 09-15-2011, 10:53 PM
Peasant
 
Join Date: Oct 2010
Location: Bennington, NE
Posts: 46
Default Re: Need help with my next steps.

So have you heard bad things about this product?
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  #22  
Old 09-16-2011, 07:27 AM
ggoose's Avatar
Apprentice
 
Join Date: Sep 2010
Location: Spokane, WA
Posts: 201
Default Re: Need help with my next steps.

I had many of the same questions when I was choosing a refractory mortar. I discovered that air set (premixed wet) mortar is water soluble, meaning if it gets wet after it has dried it will again be workable, hence it could easily be damaged . Only use mortar that 'cures' (powder form), not air drys, and moisture will have no effect on it once cured . See Build Masonry Fireboxes for a good explanation.

gene
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  #23  
Old 09-16-2011, 01:05 PM
Peasant
 
Join Date: Oct 2010
Location: Bennington, NE
Posts: 46
Default Re: Need help with my next steps.

Quote:
Originally Posted by ggoose View Post
I had many of the same questions when I was choosing a refractory mortar. I discovered that air set (premixed wet) mortar is water soluble, meaning if it gets wet after it has dried it will again be workable, hence it could easily be damaged . Only use mortar that 'cures' (powder form), not air drys, and moisture will have no effect on it once cured . See Build Masonry Fireboxes for a good explanation.

gene
Thanks Gene! That was very helpful in helping me understand why this product is not suggested. Also what kind of mortar did you end up using?
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  #24  
Old 09-16-2011, 01:10 PM
Peasant
 
Join Date: Oct 2010
Location: Bennington, NE
Posts: 46
Default Re: Need help with my next steps.

I have 72"X72" Platform, I want to use this space wisely so what would the suggestions be for my ID? Also it is a corner installation.
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  #25  
Old 09-16-2011, 05:29 PM
ggoose's Avatar
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Location: Spokane, WA
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Default Re: Need help with my next steps.

I used FB50 - 3 bags, and finished up with Heatstop 50 - 1 bag. Both are good; Heatstop is a bit easier to work with initially (creamier), but the FB is easy to work with once you figure out the proper consistency. The FB was cheaper for me even with shipping. I would use either again.

gene
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  #26  
Old 09-16-2011, 05:37 PM
ggoose's Avatar
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Location: Spokane, WA
Posts: 201
Default Re: Need help with my next steps.

72" - 4.5" X 2 (firebrick) - 3" X 2 (ceramic blanket) - 4" X 2 (steel studs and cement board or vermicrete or whatever you are finishing with) = 23"; So 72" - 23" = 49" for an maximum inner diameter. Decrease (X2) if you increase the abount of vermicrete, or vermiculite within an enclosure, or use some thicker material to enclose the dome (like cmu's).
Hope this makes sense...

gene
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  #27  
Old 09-21-2011, 07:59 PM
Peasant
 
Join Date: Oct 2010
Location: Bennington, NE
Posts: 46
Default Re: Need help with my next steps.

Has any one ever built an entire dome out of fabricated arches, 1a & 2a so on?
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  #28  
Old 09-22-2011, 08:23 AM
Ken524's Avatar
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Join Date: May 2007
Location: Kentucky
Posts: 1,649
Default Re: Need help with my next steps.

Quote:
Originally Posted by Omaharosario View Post
Has any one ever built an entire dome out of fabricated arches, 1a & 2a so on?
I haven't heard of this. Fabricated out of what? Cast refractory arches? Sounds interesting.
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  #29  
Old 09-22-2011, 08:34 AM
Peasant
 
Join Date: Oct 2010
Location: Bennington, NE
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Default Re: Need help with my next steps.

Quote:
Originally Posted by Ken524 View Post
I haven't heard of this. Fabricated out of what? Cast refractory arches? Sounds interesting.
Yes, refractory arches. We used 1a "1 Arches" To achieve our solider course. It looks great for our dry fit and has me thinking this may work for the dome also. We would set them long ways on their angled side and cut them down to make our circumference. Now how to do the math to know it will work is another question
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  #30  
Old 09-27-2011, 06:07 PM
Peasant
 
Join Date: Oct 2010
Location: Bennington, NE
Posts: 46
Default Re: Need help with my next steps.

Should you ever soak your fire brick before laying them?
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