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  #21  
Old 08-13-2011, 01:02 PM
david s's Avatar
Il Pizzaiolo
 
Join Date: Mar 2007
Location: Townsville, Nth Queensland,Australia
Posts: 4,826
Default Re: My latest precast oven, struck today

my mobile sits on a slab of aerated concrete and I cut into it with an angle grinder so the base of the outside shell bonded to it. the only thing holding the inner oven in place is the mortar between it and the base and the vermicrete between it and the outer shell. It has actually held together remarkably well and probably way better than I expected. Been over lots of bad road, potholes and speed bumps. I secure it in my trailer with chains and turnbuckles. The weight of the oven seems exactly right for my trailer springs, which was pure fluke. I do not have shocks, although I have been intending to fit some for the past few years. Because mine is on a single axle and the weight is pretty much over the axle, the drawbar has gone skywards a few times at about a 45 degree angle. The oven stayed in place beautifully with no noticable movement or damage. Have since altered the ovens position, moving it forward slightly. This was really easy because its rolled on in a trolley so I only had to alter the lengths of the securing chains.

Last edited by david s; 08-13-2011 at 01:09 PM.
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  #22  
Old 08-29-2011, 02:03 PM
Lburou's Avatar
Il Pizzaiolo
 
Join Date: Dec 2010
Location: DFW area, USA
Posts: 1,118
Thumbs up Impressed!

Well, I'm certainly impressed

From time to time I'm humbled by the product of a real craftsman. I'm humble now. Everybody doesn't have the talent you demonstrate with your oven. An awesome display of persistence, coupled with uncommon skills

Congratulations. Can't wait to hear how well it works.
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Lee B.
DFW area, Texas, USA

If you are thinking about building a brick oven, my advice is
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Our One Meter Pompeii Oven album is
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An album showing our Thermal Breaks is
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I try to learn from my mistakes, and from yours when you give me a heads up.
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  #23  
Old 08-30-2011, 12:54 PM
Apprentice
 
Join Date: Jul 2006
Location: Dorset, United Kingdom
Posts: 149
Default Re: Impressed!

Quote:
Originally Posted by Lburou View Post
Well, I'm certainly impressed

From time to time I'm humbled by the product of a real craftsman. I'm humble now. Everybody doesn't have the talent you demonstrate with your oven. An awesome display of persistence, coupled with uncommon skills

Congratulations. Can't wait to hear how well it works.
Thank you very much for the fantastic accolade. I feel like I have won the oven Oscar, cheers all
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  #24  
Old 09-01-2011, 04:32 PM
Peasant
 
Join Date: Dec 2007
Location: Michigans West Coast
Posts: 37
Default Re: My latest precast oven, struck today

The oven looks great. If you don't mind just a couple of questions.
1. how tall is the wall before it turns to become ceiling?
2. why did you set your oven on the floor rather than surrounding the floor with the oven walls which should be more heat efficent?

Thanks
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  #25  
Old 09-02-2011, 01:10 PM
Apprentice
 
Join Date: Jul 2006
Location: Dorset, United Kingdom
Posts: 149
Default Re: My latest precast oven, struck today

I weighed up the pro's and con's on forming the floor inside the oven or sitting the oven on the floor and decided the easiest way was to sit the oven on the floor (I was originally going to use bricks for the floor and decided it would be too difficult to cut them in the perfect circle to fit, I researched the loss of heat by using this meathod and it is no different, I intend to wrap the entire oven in insulation anyway. However next time I shall probably sit the oven over the floor (As I have done with one of my other ovens) Thank you

Last edited by sonomacast; 09-03-2011 at 01:52 PM.
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  #26  
Old 09-02-2011, 01:35 PM
david s's Avatar
Il Pizzaiolo
 
Join Date: Mar 2007
Location: Townsville, Nth Queensland,Australia
Posts: 4,826
Default Re: My latest precast oven, struck today

"decided the easiest way was to sit the oven on the dome"

Don't understand, did you mean sit the oven on the floor?
I think for a mobile oven that this is the best way because at least it holds most of the floor in position rather than lots of loose floor bricks bouncing around inside the oven during travel.
Just cooked 58 90 sec to 2 min pizzas last night in my 21" mobile for our annual school Spring Fair. The pizzas were a hit, but unfortunately as I was cooking them one at a time, and we were swamped with orders, some people had to wait up to 45 mins for that last pizza.
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  #27  
Old 10-10-2011, 05:53 AM
Peasant
 
Join Date: Dec 2009
Location: Belfast, Co Antrim
Posts: 25
Default Re: My latest precast oven, struck today

That looks great, but I am wondering why you made it so big if you want to keep it portable.

I suggest you keep this in your back yard and make another to fit on a trailer... which you would need to be braked double axle to prevent it tipping.

This is the FB insulation board link
http://www.fornobravo.com/PDF/FB_board.pdf
as you see it is 3 to 4 times better than vermiculite so is much lighter and compact.
You can get it for less than 80 quid from a refectory builder's yard. My local one has offcuts which I collect from time to time, no charge/beer money
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  #28  
Old 10-10-2011, 06:10 AM
Peasant
 
Join Date: Dec 2009
Location: Belfast, Co Antrim
Posts: 25
Default Re: My latest precast oven, struck today

That looks great, but I am wondering why you made it so big if you want to keep it portable.

I suggest you keep this in your back yard and make another to fit on a trailer... which you would need to be braked double axle to prevent it tipping.

This is the FB insulation board link
http://www.fornobravo.com/PDF/FB_board.pdf
as you see it is 3 to 4 times better than vermiculite so is much lighter and compact.
You can get it for less than 80 quid from a refectory builder's yard. My local one builds and repairs smelters and sometimes has offcuts, no charge/beer money.
They have tapered firebricks too, makes the circles easy.

But all this is too heavy for a portable oven, u only need 2 inches on the floor and 2.5 on the roof, unless you are making constant pizza or 150 loaves a day in which case 3" is not enough, better with twice that
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  #29  
Old 10-11-2011, 08:34 AM
Apprentice
 
Join Date: Jul 2006
Location: Dorset, United Kingdom
Posts: 149
Default Re: My latest precast oven, struck today

I origionally set out to build the best ven i ould and after many months of reading material on the subject I opted for this, The trailer is an afterthought, I have purchased a used tandem trailer and my local trailer builder (Wessex Trailers) say it will take the weight as long as I am careful going around corners. To be honest I don't know what to do with it. Cheers
Also before I set out to build this oven I called several reps for refractory companies and they said 75mm should be the absolute minimum thickness better to be 100mm and I didn't want to take any chances.

Last edited by sonomacast; 10-12-2011 at 12:48 AM.
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  #30  
Old 01-17-2012, 06:05 PM
Serf
 
Join Date: Jan 2012
Location: texas
Posts: 23
Default Re: My latest precast oven, struck today

Sonomacast - do you have any pictures of the mold? I am having a tough time understanding how you cast it in one piece and still made the pieces interlock.

Anthony
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