Cast iron and glass Jotul stove door OK?

[Wildflower]

I'm designing a barrel vault oven, smallish, and have found a disused Jotul stove, which has a lovely curved door - cast iron with glass background...I was wondering if I should consider using this? Or would the oven temps be too hot?
Many thanks for any ideas!
Zoe.

[cobblerdave]

Re: Cast iron and glass Jotul stove door OK?

G'day
Most folk use an insulated door at their oven entrance for efficiency. You could use it past the smoke chamber as heat would not be to much of an issue. ( assuming you have an external chimney). It would provide good looks and protection from the elements.
A picture would be nice.
Regards dave

[Wildflower]

Re: Cast iron and glass Jotul stove door OK?

Hello Dave!
Thanks for your reply. I recognize you from the first thread I read on this website...Annie M.'s oven build, one which I'm quite happy to be replicating (sort of).
The Jotul door is an older, crustier version of this one:


J?tul F 3 CB - Stoves - Products | J?tul

I'll take a photo soon. The problem is that is too big for the oven floor size/height/door opening that I'm planning for, so I thought I might let it rest on a lower level on the outside of the outer arch, so it would still seal the oven. Thanks for the tip about having an insulation door on the inner arch as well. I think I need to get out some more paper and pens to get this design down!

Cheers,
Zoe.

[cobblerdave]

Re: Cast iron and glass Jotul stove door OK?

Gday wildflower
I followed you link ....easy to see why you wanted to use the door in your design. The Kinda thing you want to make you oven work around.
You want to get yourself a build thread started with even a pic of the space you have picked to build on and go from there....
If I remember rightly Anne started with a pile of rocks!
http://www.fornobravo.com/forum/f25/...tml#post169960
now she's got us all ready to make our own sea salt!
Regards Dave

[Wiley]

Re: Cast iron and glass Jotul stove door OK?

Zoe,
You might want to pick up a copy of "The Bread Ovens Of Quebec" or see if your local library has a copy. The WFOs the book deals with are the cob/mud/earth type WFO but almost without exception they all have an iron door and frame for the entrance.

The glass in the Jotul is most likely borosilicate (commonly called pyrex although recent pyrex is no longer made of it) or perhaps one of the newer clear ceramics and should take the heat without much problem. Try to keep from thermally shocking it (such as a fast roaring startup fire on a sub zero day)

Bests,
Wiley

[cobblerdave]

Re: Cast iron and glass Jotul stove door OK?

Zoe,
You might want to pick up a copy of "The Bread Ovens Of Quebec" or see if your local library has a copy. The WFOs the book deals with are the cob/mud/earth type WFO but almost without exception they all have an iron door and frame for the entrance.

The glass in the Jotul is most likely borosilicate (commonly called pyrex although recent pyrex is no longer made of it) or perhaps one of the newer clear ceramics and should take the heat without much problem. Try to keep from thermally shocking it (such as a fast roaring startup fire on a sub zero day)

Bests,
Wiley

G'day
That's a great read and the books available as a free downloadable PDF from the Quebec museum site.
A PDF for building a Pompeii oven is also available free for members from the forno shop.
Regards dave

[Wildflower]

Re: Cast iron and glass Jotul stove door OK?

Thanks for the responses, I'll have to look at the Quebec ovens.

Here are some photos of my site - chosen for its location as well as its handy pre-existing height, thanks to that concrete retaining wall! I've found some firebricks from the inside of a never-used wood stove, and have taken the door off the Jotul stove. The width of the door is about 430mm (17 inches), so that I guess defines the oven's opening width. I'm thinking of making the oven with an internal diameter of 690mm (27 inches), and making it a square barrel vault along the lines of Annie M.'s (I'm also a complete masonry novice, and I like the sound of her build being doable for this punter!). I was thinking of an internal height of about 370mm (14.5 inches) - therefore the opening would have a height of 0.63 of that, which is 233mm (9 inches).

Can anyone tell me if these sizes sound feasible?

[cobblerdave]

Re: Cast iron and glass Jotul stove door OK?

Gudday Wildflower
Annies oven is incredible, especially considering the tools she had, she achieved an great little oven. she didn't make a box though she had strait sides and a arched roof.
http://www.fornobravo.com/forum/f6/b...tml#post161387
another link, another NZ oven this one built by (as we all are), a novice. Its a dome built with simple tools a brick bulster and angle grinder. Even though its got gapes in the brickwork its a dome which are incredible strong self supporting structures. . Tunnel ovens tend to move out ward when heated and expanding, they can fail unless buttressed on the sides for extra strength.
I recon a dome oven is the better bet for a novice as there is less to go wrong, structurally. You don't need a bricksaw you don't need perfect cuts!
You can make a form out of damp sand and brick over the top of that, dig the sand out, and the domes done!
anyway check out the plans they are tried and proven

Regards Dave

[Wildflower]

Re: Cast iron and glass Jotul stove door OK?

Hi Wiley and Dave,

Thanks for your messages and information. I really liked the Quebec ovens. I've decided to use the whole Jotul stove...well everything except the back, which I removed. It'll hopefully peform the same duties as a normal oven's outer arch - supplying a door with the right opening height and a flue with a damper in it.
I've started a new thread, I think in the Introductions section called

Experimental Norse-Kiwi Hybrid

Cheerio,
Zoe.