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  #51  
Old 07-18-2013, 10:59 PM
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Default Re: 42 inch Pompeii build i Norway

Quote:
Originally Posted by Steellearning View Post
Its when the blade glazes up that the sparks start flying and the blade stops cutting.
The sparks are molten glass.
Ive had to pick a few pieces out of my hand in the past.
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  #52  
Old 07-18-2013, 11:18 PM
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Default Re: 42 inch Pompeii build i Norway

Quote:
Originally Posted by brickie in oz View Post
The sparks are molten glass.
Ive had to pick a few pieces out of my hand in the past.
Good to know... I enjoy understanding whats going on
brickie in oz likes this.
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  #53  
Old 07-18-2013, 11:24 PM
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Default Re: 42 inch Pompeii build i Norway

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Originally Posted by Steellearning View Post
Good to know... I enjoy understanding whats going on
Yep, me too.....
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  #54  
Old 07-19-2013, 08:37 AM
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Default Re: 42 inch Pompeii build i Norway

Tried out the form for my inner arch. It has an inner radius of about 119 cm.
That is what my bricks are tapered for.
I'm wondering if this will work OK or should I go for a smaller radius? The opening is 51 cm wide.
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  #55  
Old 07-19-2013, 11:12 AM
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Default Re: 42 inch Pompeii build i Norway

your arch is similar to mine (and mine worked great) I have a small oven (32 inch) and I prefer the extra room that this design gives for moving pizzas in and out of the oven. I cant remember my arch radius - but I do know that the top of the arch is 10 inches above the floor and the sides are 8.5 inches - if that helps!

Good luck - looking good!

Neil

my build is here: http://www.fornobravo.com/forum/f8/3...nia-19283.html (32 Inch Pompeii in Northern California)
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  #56  
Old 07-19-2013, 11:34 AM
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Default Re: 42 inch Pompeii build i Norway

The radius for my arches were 17 3/4 " 12" to Id top 8" on sides
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  #57  
Old 07-19-2013, 12:02 PM
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Default Re: 42 inch Pompeii build i Norway

I see your ovens have a difference of 3,5 and 4 inches from sides to center.
Mine is only 1,2 inches. Not sure how that effects the load-bearing quality of the arch? If I clamp it together I'm sure it would stand on its own.
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  #58  
Old 07-19-2013, 12:59 PM
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Default Re: 42 inch Pompeii build i Norway

Ax long as the sides can take the lateral forces you will be fine even with an arch with a much larger radius. Within the arch itself the forces are compressive on the mortar bonds between the bricks and they can take a lot! Obviously if the arch is almost "flat" then you will start getting shear forces which would try to break the mortar bonds vertically. A 1.2 inch difference from top to side height like you have should be fine. The challenge is the lateral force sideways - your side walls must be able to take the load.
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  #59  
Old 07-23-2013, 07:45 AM
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Default Re: 42 inch Pompeii build i Norway

I cut bricks for two courses yesterday and while I was at it, I had my son shoot a video so people could see what its like cutting bricks without a wet saw.
Cutting fire bricks with a mitre saw - YouTube
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  #60  
Old 07-23-2013, 07:20 PM
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Default Re: 42 inch Pompeii build i Norway

You need some shims underneath the arch support legs otherwise you wont be able to get the arch profile out once the arch is built.
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