My Cast Refractory Oven Build

[Mitchamus]

Re: My Cast Refractory Oven Build

I'd say some where around elbow height....
just my preference...

[david s]

Re: My Cast Refractory Oven Build

Did you adjust the height of the door opening ?
If not I'd be really interested to see if/how it fires ?

[ThisOldGarageNJ]

Re: My Cast Refractory Oven Build

what is a good height for the oven? i guess it depends on the user's height...i am 5'10, is chest high about right?

I am 5'6" and my oven floor is at 43 inches, I find that very comfortable for me

Mark

[JoeyVelderrain]

Re: My Cast Refractory Oven Build

Did you adjust the height of the door opening ?
If not I'd be really interested to see if/how it fires ?

the door opening height is almost 10", about 9.75 actually...


and the dome ended up at 17.25



63% of 17.25 is a 10.8675" door opening height, I am at about 56% 9.75" so basically i am about 1" too low. has anyone else been an inch off? i am curious to see if it will make a huge difference before i make any alterations.

[david s]

Re: My Cast Refractory Oven Build

I would be making sure that the dome sat on top of the floor rather than the floor inside the dome, otherwise your ratio will be out further. Some mortar between the dome and the floor will also help to get closer to the ideal ratio.

[JoeyVelderrain]

Re: My Cast Refractory Oven Build

I would be making sure that the dome sat on top of the floor rather than the floor inside the dome, otherwise your ratio will be out further. Some mortar between the dome and the floor will also help to get closer to the ideal ratio.

but my door opening will also change...

[DrakeRemoray]

Re: My Cast Refractory Oven Build

I think a door that is too low/short is better than too high...
Drake

[JoeyVelderrain]

Re: My Cast Refractory Oven Build

I think a door that is too low/short is better than too high...
Drake

but being an inch too low, will it prohibit good air exchange?

[david s]

Re: My Cast Refractory Oven Build

Joey,
To further explain what I meant, take these three situations (let's say your floor is 3")

1. Dome on top of floor
9.75 div 17.25 = 56.5%

2. Floor inside dome
6.75 div 14.75 = 45.8%

3. Dome on top of floor with 1" mortar between them
10.75 div 18.25 = 58.9 %

[kombiman]

Re: My Cast Refractory Oven Build

Joey,
To further explain what I meant, take these three situations (let's say your floor is 3")

1. Dome on top of floor
9.75 div 17.25 = 56.5%

2. Floor inside dome
6.75 div 14.75 = 45.8%

3. Dome on top of floor with 1" mortar between them
10.75 div 18.25 = 58.9 %

What %age is 'optimal'?

[david s]

Re: My Cast Refractory Oven Build

My belief is that it is the golden ratio ie. 1:1.618
which is 61.8%, but history says the ancients used 63% which is practically the same.

[JoeyVelderrain]

Re: My Cast Refractory Oven Build

Joey,
To further explain what I meant, take these three situations (let's say your floor is 3")

1. Dome on top of floor
9.75 div 17.25 = 56.5%

2. Floor inside dome
6.75 div 14.75 = 45.8%

3. Dome on top of floor with 1" mortar between them
10.75 div 18.25 = 58.9 %

cool, so just raising the entire thing 1" above the floor will get me alot closer. that is an easy fix!
thanks.

[JoeyVelderrain]

Re: My Cast Refractory Oven Build

now, if i raise it 2" above the floor...
11.75 div by 19.25 = 61.08% which is almost perfect!

[david s]

Re: My Cast Refractory Oven Build

You could assemble your mould again and cast a 2" high piece.

[JoeyVelderrain]

Re: My Cast Refractory Oven Build

Molds were a one time use. How wide are fire bricks?