back to board Main Page
MTO Firebrick Arch entry
From the WFO board
Posted by Evert
Good day Rado! I tried to follow the MTO pictures but with my provisional test-arrangement have ended up with an entry to vault ratio of nearly 70%. I used 35mm firebricks at the front, started at the 203mm (8") level on the sides but ended up 276 (10.9")mm at the centre of the arch.
Now I know the difference to your photos is only at the centre of the arch (mine curves higher), but what would you suggest I do:
1) slot in underneath another arch(approx 20mm deep below the current arch) cutting in the sides to correct the percentage;
or 2) will it be OK with not too much temperature loss as the difference is only on the top centre 20%.
To remove this arch altogether would be very difficult as I have already encased the hearth with concrete cladding.
Jamie and Katrina's brick oven with temperature gauge, in Victoria.
Concrete blocks used for the oven’s outer walls. By Joe in Connecticut USA
Wood fired family oven and chimney project by Robert in Austria
My oven with fireplace, cook food and heat water, by Joel in Philippines
Baking sourdough breads in quantity in Canada
Pizza oven and hut built by Tony in Philippines