oven stand size

[Gulf]

Re: oven stand size

You mentioned facing the liner with the used brick. I had a wet saw, so cutting the face brick was no problem. I cut my brick leaving a 2" face. This left about a 2" gap betwen the liner and the face brick which was filled with 10 to 1 vecrete.

The ss pipe shown at the top is just where I inserted a transition piece should I have wanted to extend the chimney with a section of double wall pipe. The face brick on my chimney are 3 brick X 3 brick (24"X24"). The 8" OD flu liner that you have would only require 2 brick X 2 brick (16"X16") if done this way. That is, if you decide to use them.

[thebigt]

Re: oven stand size

Yeah I'm always a little leary of used things. These do seem to be in good condition and we're only used in the chimney for 2 years. I'm not married to the idea of using them just thought that they might be easier to install and face with brick. But yes they have been stored outside since 2012 and have been through several freeze/that cycles.

[Gulf]

Re: oven stand size

Also as part of the gift of those vaneer bricks I got several clay chimney flue's that are 8"x8" OD and 6.5"?6.5 ID and about 2 feet tall. Would one of these work for the chminey of a 36" oven? I'd end up facing it with some of that clay brick that I have.

Your question and my answer will probably create a lot of discussion . I think that the 6.5 X 6.5 ID liners will be fine for a 36" oven. You may end up having to use 1 and a half to two sections to get a suitable draw height, though.

My main consern would be their condition, since they are used. Also, have they been stored out in the weather since they were removed? I'm thinking of them getting wet and how freeze/thaw might effect them. I'm not sure that it would

[thebigt]

Re: oven stand size

Also as part of the gift of those vaneer bricks I got several clay chimney flue's that are 8"x8" OD and 6.5"?6.5 ID and about 2 feet tall. Would one of these work for the chminey of a 36" oven? I'd end up facing it with some of that clay brick that I have.

[thebigt]

Re: oven stand size

Yeah it's pretty crazy prices up here... We used to have tons of clay Manufacturers here but they have all closed down so everything has shipping costs added into it. When I bought my CFB the shipping would have been more than the product itself. Luckily I had someone drive it down for me.

[Gulf]

Re: oven stand size

Ouch! That is high. I had two choices for firebrick on my oven. One was a pressed firebrick that was very close to perfect. I used those for the floor. Another, cheaper option, was a wire cut firebrick that I used for the dome. The wire cut were not as perfect in symmetry as the pressed. But, I figured since they would be mostly cuts, what the "hey" .

I know that John (GianniFoccacia) would think this "a blasphemy", as my dome was not built from the most perfect of cuts . But, the old gal is holding up so far .

[thebigt]

Re: oven stand size

I did a couple of years ago and it was about 2.68 per brick but havent gotten updated pricing. I was also going to check with another supplier and see what their pricing is like on both bricks and mortar.

I think ive finally settled on building a 36" oven since I have to pour new concrete anyways, just need to confirm the number of bricks that will be needed then get my plan drawn up and get spousal approval to proceed.

As for that clay brick it does have some chips in a few bricks but I agree it will look good as vaneer face brick.

[Gulf]

Re: oven stand size

A few years ago I was given about 600 IXL Masonry clay brick that were dismantled from a chimney from a home built in 1957. Am I correct in assuming that these would be no good for the dome and only good for dressing up the outside of my oven?

That would be my advice. They probably would make a vey good looking face brick. I would try to find a medium density firebrick for the dome and floor. Have you priced firebrick in your area?

[stonecutter]

Re: oven stand size

A few years ago I was given about 600 IXL Masonry clay brick that were dismantled from a chimney from a home built in 1957. Am I correct in assuming that these would be no good for the dome and only good for dressing up the outside of my oven?

Veneer only.

[thebigt]

Re: oven stand size

A few years ago I was given about 600 IXL Masonry clay brick that were dismantled from a chimney from a home built in 1957. Am I correct in assuming that these would be no good for the dome and only good for dressing up the outside of my oven?

[thebigt]

Re: oven stand size

Thanks for the help Gulf...no worries on the late reply, im just thankful for the advice

[Gulf]

Re: oven stand size

So if I took my 50? wide slab and make it 60" and extended the 52" depth to 70 inches that should give me plenty of room?

Yes. for a 36" enclosure with a brick and a half deep flu entry plus a 4" face brick and 2" to spare.

Since my base is 48x48 I'm assuming that 11 inches of overhang on either side will be ok? If I add o to my existing hearth slab to be wider and deeper it will end up being 3.5" thick and has rebar inside.

That would be fine. Most of the real load will still be sitting inline with the 48 columns"

Only other option would be to expand my depth front of my slab slightly and build a 32" and just go with an igloo. Does that sound right?

Yes.

Sorry, for the late reply. I was working a lot of hours this week. My answers are based on a deep flu entry. A brick and a half allows plenty of room for an 8" flu. You may not need that large of a flu for a 36". Surely not, for the 32". But, there are plenty of builders out there with the first hand experience to comment on that .

[thebigt]

Re: oven stand size

So if I took my 50“ wide slab and make it 60" and extended the 52" depth to 70 inches that should give me plenty of room?

Since my base is 48x48 I'm assuming that 11 inches of overhang on either side will be ok? If I add o to my existing hearth slab to be wider and deeper it will end up being 3.5" thick and has rebar inside.

Only other option would be to expand my depth front of my slab slightly and build a 32" and just go with an igloo. Does that sound right?

[Gulf]

Re: oven stand size

I live in the bald prairies so wood is available but I have to buy it...a 1/2cord of split birch runs about $180-200. Would there be much of a difference in fuel between a 32" &36"?

Part of the decision on will be based on how much room I have in the location where I put the base as I prefer it to not stick too far out into the yard but again probably a pretty small difference between 32 and 36. How much extra space would be required for a small enclosure if I go down that route?

I will defer the fuel usage, between the two, to those who have built those size ovens. But, I think that fuel usage is also dependant on insulation. I wouldn't compare the fuel usage results from both sizes with different insulation types and thicknesses. That would be "comparing apples to oranges" .

For an enclosure, I would go for 3" of ceramic fiber blanket. And / or, as much loose fill vermiculte or perlite that I could aquire or afford.

A 36' oven: Will be 36" ID, of course. 36"
Add 4" for the brick X 2 for each side. 8"
Add 3" of insulation X 2 for each side. 6"
Add 3.5" for metal studs X 2 for each side. 7"
That is 57 " minimum, for the width. You can cheat in a little, if you are careful with the stud placement.

The depth, will depend on those figures + how deep of an entry that you decide. There are thinner metal studs available, but I don't know if they are OK for exterior builds. I work with wood. Had, I have went with a dog house (I meant enclosure ), I would have split treated studs on the table saw for framing.

[thebigt]

Re: oven stand size

I think that there are several ovens on this site that have built 42" ovens with just one box (six pieces of 1' x 3') of CalSil. You don't need the CalSil under the flu entry. But, I think there will still be enough from the cuts to include that area.

I just want to add to what has already been advised to deciding oven size. That is fuel (wood) availability. One reason that I built a large oven is because I have plenty of wood resources. I don't know much about your area. From the single pic that I have of your oven stand, I don't see much. From what I have read about your great country, ya'll have a lot .

I live in the bald prairies so wood is available but I have to buy it...a 1/2cord of split birch runs about $180-200. Would there be much of a difference in fuel between a 32" &36"?

Part of the decision on will be based on how much room I have in the location where I put the base as I prefer it to not stick too far out into the yard but again probably a pretty small difference between 32 and 36. How much extra space would be required for a small enclosure if I go down that route?